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https://en.wikipedia.org/wiki/ICub
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iCub is a 1 metre tall open source robotics humanoid robot testbed for research into human cognition and artificial intelligence.
It was designed by the RobotCub Consortium of several European universities and built by Italian Institute of Technology, and is now supported by other projects such as ITALK. The robot is open-source, with the hardware design, software and documentation all released under the GPL license. The name is a partial acronym, cub standing for Cognitive Universal Body. Initial funding for the project was €8.5 million from Unit E5 – Cognitive Systems and Robotics – of the European Commission's Seventh Framework Programme, and this ran for 65 months from 1 September 2004 until 31 January 2010.
The motivation behind the strongly humanoid design is the embodied cognition hypothesis, that human-like manipulation plays a vital role in the development of human cognition. A baby learns many cognitive skills by interacting with its environment and other humans using its limbs and senses, and consequently its internal model of the world is largely determined by the form of the human body. The robot was designed to test this hypothesis by allowing cognitive learning scenarios to be acted out by an accurate reproduction of the perceptual system and articulation of a small child so that it could interact with the world in the same way that such a child does.
Specifications
The dimensions of the iCub are similar to that of a 3.5-year-old child. The robot is cont
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https://en.wikipedia.org/wiki/Stem%20cell%20genomics
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Stem cell genomics analyzes the genomes of stem cells. Currently, this field is rapidly expanding due to the dramatic decrease in the cost of sequencing genomes. The study of stem cell genomics has wide reaching implications in the study of stem cell biology and possible therapeutic usages of stem cells. Application of research in this field could lead to drug discovery and information on diseases by the molecular characterization of the pluripotent stem cell through DNA and transcriptome sequencing and looking at the epigenetic changes of stem cells and subsequent products. One step in that process is single cell phenotypic analysis, and the connection between the phenotype and genotype of specific stem cells. While current genomic screens are done with entire populations of cells, focusing in on a single stem cell will help determine specific signaling activity associated with varying degrees of stem cell differentiation and limit background due to heterogeneous populations. Single cell analysis of induced pluripotent stem cells (iPSCs), or stem cells able to differentiate into many different cell types, is a suggested method for treating such diseases like Alzheimer's disease (AD). This includes for understanding the differences between sporadic AD and familial AD. By first taking a skin sample from the patient and are transformed by transducing cells using retroviruses to encode such stem cell genes as Oct4, Sox2, KLF4 and cMYC. This allows for skin cells to be reprogramm
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https://en.wikipedia.org/wiki/M168
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M168 or M-168 may refer to:
a mutation found in the haplogroup CT of Y-DNA, in human genetics
M-168 (Michigan highway), a former state highway in Michigan
M168, a 20 mm rotary cannon mounted on the M163 VADS
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https://en.wikipedia.org/wiki/Heronian%20mean
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In mathematics, the Heronian mean H of two non-negative real numbers A and B is given by the formula
It is named after Hero of Alexandria.
Properties
Just like all means, the Heronian mean is symmetric (it does not depend on the order in which its two arguments are given) and idempotent (the mean of any number with itself is the same number).
The Heronian mean of the numbers A and B is a weighted mean of their arithmetic and geometric means:
Therefore, it lies between these two means, and between the two given numbers.
Application in solid geometry
The Heronian mean may be used in finding the volume of a frustum of a pyramid or cone. The volume is equal to the product of the height of the frustum and the Heronian mean of the areas of the opposing parallel faces.
A version of this formula, for square frusta, appears in the Moscow Mathematical Papyrus from Ancient Egyptian mathematics, whose content dates to roughly 1850 BC.
References
Means
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https://en.wikipedia.org/wiki/John%20Spence%20%28politician%29
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John Deane Spence (7 December 1920 – 4 March 1986) was a British Conservative Party politician.
Spence was educated at Queen's University, Belfast and worked as a building and civil engineering contractor, merchant banker and farmer.
Spence contested Wakefield in 1964, and Sheffield Heeley in 1966. He was Member of Parliament for Sheffield Heeley from 1970 to 1974, Thirsk and Malton from 1974 to 1983, and Ryedale from 1983 until he died in office in 1986 aged 65. He was a member of the Speaker's panel of chairmen.
References
The Times Guide to the House of Commons, Times Newspapers Ltd, 1966 & 1983
External links
1920 births
1986 deaths
Conservative Party (UK) MPs for English constituencies
UK MPs 1970–1974
UK MPs 1974
UK MPs 1974–1979
UK MPs 1979–1983
UK MPs 1983–1987
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https://en.wikipedia.org/wiki/SARS%20%28disambiguation%29
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SARS most commonly refers to severe acute respiratory syndrome, a viral respiratory disease identified in the early 2000s caused by SARS-CoV-1.
SARS or Sars may also refer to:
Biology and medicine
SARS (gene), a human gene for encoding the enzyme cytoplasmic seryl-tRNA synthetase
Severe acute respiratory syndrome–related coronavirus (SARSr-CoV or SARS-CoV), a virus species containing:
Severe acute respiratory syndrome coronavirus (SARS-CoV or SARS-CoV-1), the virus that causes:
Severe acute respiratory syndrome, an infectious disease first identified in 2002
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes:
Coronavirus disease 2019 (COVID-19), an infectious disease first identified in 2019
Bat SARS-like coronavirus WIV1 (Bat SL-CoV-WIV1 or SARS-like coronavirus WIV1), a strain isolated from Chinese rufous horseshoe bats
Organizations
South African Revenue Service
Special Anti-Robbery Squad, former unit of the Nigeria Police Force
End SARS, decentralised protest movement aimed at disbanding the squad
Suffolk Accident Rescue Service, a charity providing medical care in the United Kingdom
Places
Sars (urban-type settlement), a settlement in Perm Krai, Russia
Sars Bank, a bank in the Drake Passage between South America and Antarctica
France
Le Sars, a commune in Pas-de-Calais
Sars-le-Bois, a commune in Pas-de-Calais
Sars-Poteries, a commune in Nord
Sars-et-Rosières, a commune in Nord
Other uses
SARS (band) (Sveže Amputiran
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https://en.wikipedia.org/wiki/Mitchell%20A.%20Wilson
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Mitchell A. Wilson (July 17, 1913 in New York - February 25, 1973) was an American novelist and physicist.
Life and career
Before becoming a writer, Wilson was a research scientist (for a time as an assistant to Enrico Fermi) and instructor in physics at the university level. Science, invention, and the ethical problems of modern atomic science are the subjects for some of his works. He also wrote non-fiction on scientific matters for the general reader.
At the height of the Cold War, he was considered a major novelist in the Soviet Union, while in his native United States his reputation was considerably less elevated.
His novels include Live with Lightning, Meeting at a Far Meridian, and My Brother, My Enemy. A 1945 novel None So Blind was adapted for the 1947 film The Woman on the Beach directed by Jean Renoir. His non-fiction includes American science and Invention, a Pictorial History and Passion to Know. At the start of his career, he collaborated on a mystery novel The Goose is Cooked with Abraham Polonsky, written under the joint pseudonym of Emmett Hogarth.
At the time of his death, Wilson was married to acting coach Stella Adler. His first marriage was to Helen Weinberg Wilson which produced two daughters: Erica Silverman, a literary agent, and Victoria Wilson, editor and publisher at Alfred A. Knopf.
Books
Energy (1963; Series: LIFE Science Library)
The Human Body: What It Is and How It Works
References
Oxford Companion to American Literature
American Natio
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https://en.wikipedia.org/wiki/Anders%20Martin-L%C3%B6f
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Anders Martin-Löf (born 16 March 1940) is a Swedish physicist and mathematician. He has been a professor at the Department of Mathematics of Stockholm University.
Martin-Löf did his undergraduate studies at the KTH Royal Institute of Technology in Stockholm and got his exam in engineering physics in 1963. He continued with graduate studies in optimization at KTH and at MIT in the United States from 1967–1968, later on followed by a position as Research Associate at the Rockefeller University in New York City 1970–1971, working with probability theory and applications to statistical mechanics. he received his Ph.D. degree in 1973.
During the following 10 years he continued working with similar issues as "docent" in Uppsala and Stockholm. In the 1980s he changed to insurance mathematics with the Folksam company including development of theories for controlling movements of insurances. From 1987 he has been working with theoretical and applied aspects of his assignment as professor with the Stockholm University.
Martin-Löf has two children from his first marriage and a daughter from his second. Anders is the brother of Per Martin-Löf, who was responsible for a pioneering definition of randomness, as well as a foundation for constructive mathematics based on intuitionistic type theory. Per is also a professor at Stockholm University, with joint appointments in the departments of mathematics and philosophy. They share an interest in statistics, and in statistical mechanics,
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https://en.wikipedia.org/wiki/Jo%C3%ABl%20Champetier
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Joël Champetier (30 November 1957 – 30 May 2015) was a French-Canadian science fiction and fantasy author.
Biography
Born in La Corne, Quebec (Abitibi-Témiscamingue district), Champetier became a full-time writer after working in electrochemistry. Champetier's first published work, Le chemin des fleurs, appeared in Quebec science-fiction and fantasy magazine Solaris in 1981. After publishing many stories in various magazines and collections, some of which would be translated to English, Champetier first youth novel, La mer au fond du monde, was published in 1990.
La taupe et le dragon, Champetier's first adult science-fiction novel, was published in 1991. This would be translated into English and published in the United States in 1999 by Tor Books as "The Dragon's Eye". Champetier has also been published in France, such as a collection of stories through Orion, and his fantasy novel Les sources de la magie was published by Bragelonne in 2005.
Champetier also grew in status among the community of Quebec science-fiction and fantasy writers. In 1983, Champetier helped organise the Boréal Congress, an annual Quebec science-fiction conference and would serve on the conference's board of directors in 1984, and again from 1989 to 1999, becoming vice-president from 1994 to 1999.
In 1987, Champetier became a literary critic in the publication L'année de la science-fiction et du fantastique québécois (Quebec Science Fiction and Fantasy Annual).
At Solaris magazine, Champetier beca
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https://en.wikipedia.org/wiki/Radium%20bromide
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Radium bromide is the bromide salt of radium, with the formula RaBr2. It is produced during the process of separating radium from uranium ore. This inorganic compound was discovered by Pierre and Marie Curie in 1898, and the discovery sparked a huge interest in radiochemistry and radiotherapy. Since elemental radium oxidizes readily in air and water, radium salts are the preferred chemical form of radium to work with. Even though it is more stable than elemental radium, radium bromide is still extremely toxic, and can explode under certain conditions.
History
After the Curies discovered radium (in the form of radium chloride) in 1898, scientists began to isolate radium on an industrial scale, with the intent of using it for radiotherapy treatments. Radium salts, including radium bromide, were most often used by placing the chemical in a tube that was then passed over or inserted into diseased tissue in the body. Many of the first scientists to try to determine radium's uses were affected by their exposure to the radioactive material. Pierre Curie went so far as to self-inflict a severe chemical skin reaction by applying a radium source directly to his forearm, which ultimately created a skin lesion. All types of therapeutic tests were performed for different skin diseases including eczema, lichen and psoriasis. Later, it was hypothesized that radium could be used to treat cancerous diseases.
However, during this time frame, radium also gained popularity among pseudoscienti
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https://en.wikipedia.org/wiki/Copachisa
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Copachisa (Constructora de Parques de Chihuahua, S.A. de C.V.) is an industrial design and construction company based in the city of Chihuahua, Mexico, with regional offices in Monterrey, Ciudad Juárez, Querétaro, San Luis Potosí, and Mexico City.
References
Construction and civil engineering companies of Mexico
Construction and civil engineering companies established in 1958
Mexican companies established in 1958
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https://en.wikipedia.org/wiki/Artin%E2%80%93Hasse%20exponential
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In mathematics, the Artin–Hasse exponential, introduced by , is the power series given by
Motivation
One motivation for considering this series to be analogous to the exponential function comes from infinite products. In the ring of formal power series Q[[x]] we have the identity
where μ(n) is the Möbius function. This identity can be verified by showing the logarithmic derivative of the two sides are equal and that both sides have the same constant term. In a similar way, one can verify a product expansion for the Artin–Hasse exponential:
So passing from a product over all n to a product over only n prime to p, which is a typical operation in p-adic analysis, leads from ex to Ep(x).
Properties
The coefficients of Ep(x) are rational. We can use either formula for Ep(x) to prove that, unlike ex, all of its coefficients are p-integral; in other words, the denominators of the coefficients of Ep(x) are not divisible by p. A first proof uses the definition of Ep(x) and Dwork's lemma, which says that a power series f(x) = 1 + ... with rational coefficients has p-integral coefficients if and only if f(xp)/f(x)p ≡ 1 mod pZp[[x]]. When f(x) = Ep(x), we have f(xp)/f(x)p = e−px, whose constant term is 1 and all higher coefficients are in pZp.
A second proof comes from the infinite product for Ep(x): each exponent -μ(n)/n for n not divisible by p is a p-integral, and when a rational number a is p-integral all coefficients in the binomial expansion of (1 - xn)a are p-integral
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https://en.wikipedia.org/wiki/Jean%20Cavaill%C3%A8s
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Jean Cavaillès (; ; 15 May 1903 – 4 April 1944) was a French philosopher and logician who specialized in philosophy of mathematics and philosophy of science. He took part in the French Resistance within the Libération movement and was arrested by the Gestapo on 17 February 1944 and shot on 4 April 1944.
Early life and education
Cavaillès was born in Saint-Maixent, Deux-Sèvres. After passing his first baccalauréat in 1919 and baccalauréats in mathematics and philosophy the following year, he studied at the Lycée Louis-le-Grand, including two years of classes préparatoires, before entering the École Normale Supérieure in 1923, reading philosophy. In 1927 he passed the agrégation competitive exam. He began graduate studies in Philosophy in 1928 under the supervision of Léon Brunschvicg. Cavaillès won a Rockefeller Foundation scholarship in 1929–1930. In 1931 he travelled extensively in Germany; in Göttingen he conceived, jointly with Emmy Noether, the project of publishing the Cantor-Dedekind correspondence. He was a teaching assistant at the École Normale Supérieure between 1929 and 1935, then teacher at the lycée d'Amiens (now lycée Louis-Thuillier) in 1936. In 1937, he successfully defended his doctoral theses at the University of Paris and became a Doctor of Letters in Philosophy. He was then appointed maître de conférences in Logic and in General Philosophy at the University of Strasbourg.
World War II
After the outbreak of World War II, he was mobilized in 1939 as an inf
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https://en.wikipedia.org/wiki/Wedo
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Wedo, WEDO or WeDo may refer to:
WEDO, a radio station in Pittsburgh, Pennsylvania, US
West–Eastern Divan Orchestra, based in Seville, Spain
Women's Environment and Development Organization, based in New York City, US
WeDo, an educational robotics set by Lego Education
People
Wedo Georgetti (1911–2005), American artist
Wedo Martini (1913–1970), American baseball player
See also
We Do (disambiguation)
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https://en.wikipedia.org/wiki/Amando%20Kapauan
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Amando F. Kapauan (July 4, 1931 – October 12, 1996) was a chemist and researcher. He graduated magna cum laude from University of the Philippines, Diliman in 1952, with a bachelor's degree in chemistry. He obtained his doctorate from the University of Southern California in 1959.
In the Ateneo de Manila University Department of Chemistry, he worked on inorganic and physical chemistry, particularly on radioactive bromine. With other colleagues, he initiated investigations in the 1970s on heavy metals analysis in our environment. He was among the first to look into the problem of mercury in the environment, and he designed the appropriate equipment for mercury analysis in water, fish and soil.
Kapauan linked with international groups, taught one of the first environmental chemistry courses in the country, and involved himself in policies on urban-rural planning.
He later went into the field of electronics, specifically chemical instrumentation. Together with Fr. William Schmitt, S.J., they pioneered the maintenance, design and modification of instruments.
Kapauan's first publication appeared in the Journal of Chemical Education in May 1973.
He also started to interface traditional instruments with the increasingly popular PC. By the 1980s, his students were designing software for them, including Fourier Transform of signals. He redesigned a spectrophotometer with vacuum-tube technology into one with solid-state technology, run by a PC with software written by his students
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https://en.wikipedia.org/wiki/Harmonic%20polynomial
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In mathematics, in abstract algebra, a multivariate polynomial over a field such that the Laplacian of is zero is termed a harmonic polynomial.
The harmonic polynomials form a vector subspace of the vector space of polynomials over the field. In fact, they form a graded subspace. For the real field, the harmonic polynomials are important in mathematical physics.
The Laplacian is the sum of second partials with respect to all the variables, and is an invariant differential operator under the action of the orthogonal group via the group of rotations.
The standard separation of variables theorem states that every multivariate polynomial over a field can be decomposed as a finite sum of products of a radial polynomial and a harmonic polynomial. This is equivalent to the statement that the polynomial ring is a free module over the ring of radial polynomials.
See also
Harmonic function
Spherical harmonics
Zonal spherical harmonics
Multilinear polynomial
References
Lie Group Representations of Polynomial Rings by Bertram Kostant published in the American Journal of Mathematics Vol 85 No 3 (July 1963)
Abstract algebra
Polynomials
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https://en.wikipedia.org/wiki/Radical%20polynomial
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In mathematics, in the realm of abstract algebra, a radical polynomial is a multivariate polynomial over a field that can be expressed as a polynomial in the sum of squares of the variables. That is, if
is a polynomial ring, the ring of radical polynomials is the subring generated by the polynomial
Radical polynomials are characterized as precisely those polynomials that are invariant under the action of the orthogonal group.
The ring of radical polynomials is a graded subalgebra of the ring of all polynomials.
The standard separation of variables theorem asserts that every polynomial can be expressed as a finite sum of terms, each term being a product of a radical polynomial and a harmonic polynomial. This is equivalent to the statement that the ring of all polynomials is a free module over the ring of radical polynomials.
References
Abstract algebra
Polynomials
Invariant theory
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https://en.wikipedia.org/wiki/Stephen%20Hopper
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Stephen Donald Hopper AC FLS FTSE (born 18 June 1951) is a Western Australian botanist. He graduated in Biology, specialising in conservation biology and vascular plants. Hopper has written eight books, and has over 200 publications to his name. He was Director of Kings Park in Perth for seven years, and CEO of the Botanic Gardens and Parks Authority for five. He is currently Foundation Professor of Plant Conservation Biology at The University of Western Australia. He was Director of the Royal Botanic Gardens, Kew from 2006 to 2012.
This botanist is denoted by the author abbreviation Hopper when citing a botanical name.
Honours
On 1 January 2001, the Australian government awarded Hopper the Centenary Medal for his "service to the community". On 11 June 2012, Hopper was named a Companion of the Order of Australia for "eminent service as a global science leader in the field of plant conservation biology, particularly in the delivery of world class research programs contributing to the conservation of endangered species and ecosystems."
Albany
In 2015 he moved to Albany, Western Australia, and he has returned to his interest in Anigozanthus.
Selected works
Gondwanan heritage (1996)
with Jane Sampson:
Endangered poison plants (1989)
with Anne Taylor:
The Banksia Atlas (1991)
with Bert and Babs Wells:
Kangaroo paws and catspaws (1993)
with illustrator Philippa Nikulinsky:
Soul of the Desert (2005)
Life on the Rocks (2008)
References
1951 births
Living people
20t
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https://en.wikipedia.org/wiki/MIT%20Museum
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The MIT Museum, founded in 1971, is located at the Massachusetts Institute of Technology in Cambridge, Massachusetts. It hosts collections of holography, technology-related artworks, artificial intelligence, architecture, robotics, maritime history, and the history of MIT. Its holography collection of 1800 pieces is the largest in the world, though only a few selections from it are usually exhibited. , works by the kinetic artist Arthur Ganson are the largest long-running displays. There is a regular program of temporary special exhibitions, often on the intersections of art and technology.
The overall purpose of the MIT Museum is to "turn MIT inside out" by making MIT's work more visible and accessible to the outside world. In addition to serving the MIT community, the museum offers numerous outreach programs to school-age children and adults in the public at large. The widely attended annual Cambridge Science Festival was originated by and continues to be coordinated by the museum.
In October 2022, the MIT Museum reopened in new, expanded facilities in the Kendall Square innovation district.
History
The museum was founded in 1971 by Warren Seamans, originally as part of an exhibit project of the Office of the President and the Department of Humanities for the inauguration of President Jerome Wiesner. The committee involved was named the "Historical Collections" in December 1971 and served as the predecessor to the museum. Its purpose was to collect and preserve hist
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https://en.wikipedia.org/wiki/Hagelin
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Hagelin may refer to:
Albert Viljam Hagelin (1881–1946), Norwegian World War II collaborationist and minister
Bobbie Hagelin (born 1984), Swedish hockey player
Boris Hagelin (1892–1983), Swedish businessman and inventor of a cryptography machine (see M-209)
Carl Hagelin (born 1988), Swedish hockey player
Dagmar Hagelin (1959 – c. 1977), Argentine-Swedish girl who disappeared during the Dirty Wars
Gustaf Hagelin (1897–1983), Swedish horse rider
Joakim Hagelin (born 1989), Swedish ice hockey player
John Hagelin (born 1954), US scientist and politician
Robert Hagelin (1884 – after 1938), Norwegian politician
Germanic-language surnames
Swedish-language surnames
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https://en.wikipedia.org/wiki/Luzin%20N%20property
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In mathematics, a function f on the interval [a, b] has the Luzin N property, named after Nikolai Luzin (also called Luzin property or N property) if for all such that , there holds: , where stands for the Lebesgue measure.
Note that the image of such a set N is not necessarily measurable, but since the Lebesgue measure is complete, it follows that if the Lebesgue outer measure of that set is zero, then it is measurable and its Lebesgue measure is zero as well.
Properties
Any differentiable function has the Luzin N property. This extends to functions that are differentiable on a cocountable set, as the image of a countable set is countable and thus a null set, but not to functions differentiable on a conull set:
The Cantor function does not have the Luzin N property, as the Lebesgue measure of the Cantor set is zero, but its image is the complete [0,1] interval.
A function f on the interval [a,b] is absolutely continuous if and only if it is continuous, is of bounded variation and has the Luzin N property.
References
External links
Luzin-N-property in the Encyclopedia of Mathematics
Real analysis
Measure theory
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https://en.wikipedia.org/wiki/AAOM
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American Academy Of Microbiology - now American Society for Microbiology
American Association of Oriental Medicine - became American Association of Acupuncture and Oriental Medicine
American Academy of Occupational Medicine - became American College of Occupational and Environmental Medicine
American Academy of Oral Medicine
Alternativna Akademska Obrazovna Mreza
American Association Of Museums
American Association of Orthopedic Medicine
Association of Assessing Officers of Manitoba
Asia Academy of Management
Australian Aboriginal Outreach Ministries
Autism Alliance of Michigan
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https://en.wikipedia.org/wiki/TCBS
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TCBS may refer to:
Hard Knocks: The Chris Benoit Story
Thiosulfate-citrate-bile salts-sucrose agar, a selective media agar type used in microbiology for cholerae culture
The "Tea Club and Barrovian Society" of which J. R. R. Tolkien was a member
Tuba City Boarding School
Texas Community Bancshares Inc. A Nasdaq Listed Company
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https://en.wikipedia.org/wiki/Michel%20Bakhoum
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Michel Bakhoum (, , ; 1913–1981) was an Egyptian consulting civil engineer, university professor, and a researcher in concrete structures.
Education and early years
Michel Bakhoum was born in June 1913 in Cairo.
He graduated from the Civil Engineering Department at Cairo University in 1936 (then known as Fouad I University). He completed his M.Sc. in 1942, and his first Ph.D. in 1945. He was the second person in Egypt to receive a Ph.D. from the Faculty of Engineering at Cairo University. In 1945, he traveled to the University of Illinois at Urbana-Champaign where he received his second Ph.D. He then spent one year at Columbia University in New York, to strengthen his background in Theoretical Mechanics, Theory of Elasticity and Theory of Plasticity. He worked also (part time) in a Consulting Engineering Firm at the same time in New York City, to get acquainted with State-of-the-Art design methodologies of Concrete Structures in the USA.
Consulting engineering
In 1949, Michel Bakhoum returned to Egypt where he started teaching in the Structural Engineering Department at Cairo University as an assistant professor. He started a consulting firm in 1950 with his colleague Ahmed Moharram. The company is now known as ACE: Arab Consulting Engineers (Moharram-Bakhoum). The company started as a structural-design office with four people in 1950, now the company has over eight-hundred staff working with the consulting firm ACE.
Academic career
Michel Bakhoum taught civil and struct
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https://en.wikipedia.org/wiki/Photon-induced%20electric%20field%20poling
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In physics, photon-induced electric field poling is a phenomenon whereby a pattern of local electric field orientations can be encoded in a suitable ferroelectric material, such as perovskite. The resulting encoded material is conceptually similar to the pattern of magnetic field orientations within the magnetic domains of a ferromagnet, and thus may be considered as a possible technology for computer storage media. The encoded regions are optically active (have a varying index of refraction) and thus may be "read out" optically.
Encoding process
The encoding process proceeds by application of ultraviolet light tuned to the absorption band associated with the transition of electrons from the valence band to the conduction band. During UV application, an external electric field is used to modify the electric dipole moment of regions of the ferroelectric material that are exposed to UV light. By this process, a pattern of local electric field orientations can be encoded.
Technically, the encoding effect proceeds by the creation of a population inversion between the valence and conduction bands, with the resulting creation of plasmons. During this time, ferroelectric perovskite materials can be forced to change geometry by the application of an electric field. The encoded regions become optically active due to the Pockels effect.
Decoding process
The pattern of ferroelectric domain orientations can be read out optically. The refractive index of the ferroelectric material at
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https://en.wikipedia.org/wiki/Anilide
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In organic chemistry, anilides (or phenylamides) are a class of organic compounds with the general structure . They are amide derivatives of aniline ().
Preparation
Aniline reacts with acyl chlorides or carboxylic anhydrides to give anilides. For example, reaction of aniline with acetyl chloride provides acetanilide (). At high temperatures, aniline and carboxylic acids react to give anilides.
Uses
Herbicides
Fungicides - Oxycarboxin, Carboxin
References
External links
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https://en.wikipedia.org/wiki/National%20Numeracy%20Strategy
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The National Numeracy Strategy arose out of the National Numeracy Project in 1996, led by a Numeracy Task Force in England. The strategy included an outline of expected teaching in mathematics for all pupils from Reception to Year 6.
In 2003, the strategy, including the framework for teaching, was absorbed into the broader Primary National Strategy. The framework for teaching was updated in 2006.
See also
National Curriculum (England, Wales and Northern Ireland)
Key Stage
Chunking (division)
Grid method multiplication
Number bond
Further reading
Department for Education and Employment (1998), The implementation of the National Numeracy Strategy: The final report of the Numeracy Task Force, London: DfEE
Department for Education and Employment (1999), The National Numeracy Strategy: framework for teaching mathematics from reception to Year 6, London: DfEE.
QCA (1999), Standards in mathematics: exemplification of key learning objectives from reception to year 6
Rob Eastaway, Why parents can't do maths today, BBC News, 10 September 2010
Ian Thompson (2000), Is the National Numeracy Strategy evidence based?, Mathematics Teaching, 171, 23–27
Dylan V. Jones (2002), National numeracy initiatives in England and Wales: a comparative study of policy, The Curriculum Journal, 13 (1), 5–23.
Chris Kyriacou and Maria Goulding (2004), A systematic review of the impact of the Daily Mathematics Lesson in enhancing pupil confidence and competence in early mathematics, Evidence for Pol
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https://en.wikipedia.org/wiki/University%20of%20Illinois%20College%20of%20Agriculture%2C%20Consumer%2C%20and%20Environmental%20Sciences
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The University of Illinois Urbana-Champaign's College of Agricultural, Consumer and Environmental Sciences (ACES) is part of the University of Illinois Urbana-Champaign and is considered by some to be the top school of agriculture-related sciences in the world. Most of the ACES buildings are located on the South Quad. In terms of staff, ACES has 186 tenure-system faculty, 78 specialized faculty, 26 postdoctoral researchers, 493 academic professionals, 565 civil service staff, 323 assistants, and 956 hourly employees.
Facilities
ACES Library, Information and Alumni Center
Turner Hall
Animal Sciences Laboratory
Edward R. Madigan Laboratory
Agriculture Engineering Sciences Building
Mumford Hall, named for Herbert Windsor Mumford I
Bevier Hall
Departments
Agricultural and Biological Engineering
The undergraduate Agricultural Engineering program at the University of Illinois Urbana-Champaign was ranked 1st and the undergraduate engineering program was ranked 5th in the 2008 America's Best Colleges edition of U.S. News & World Report (published in August 2007). The graduate engineering program at Illinois was ranked 5th in the 2007 Best Graduate Schools issue of U.S. News & World Report (published in March 2007). (College of Engineering) (ACES News)
Agricultural and Consumer Economics
Agricultural Education
Animal Sciences
Technical Systems Management
Crop Sciences
Food Science and Human Nutrition
Human Development and Family Studies
Natural Resources and Environ
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https://en.wikipedia.org/wiki/Universal%20powerline%20bus
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Universal Powerline Bus (UPB) is a proprietary software protocol developed by Powerline Control Systems for power-line communication between devices used for home automation. Household electrical wiring is used to send digital data between UPB devices via pulse-position modulation.
Communication is peer to peer, with no central controller necessary.
UPB addressing allows 250 devices per house and 250 houses per transformer, allowing over 62,500 total device addresses and can co-exist with other powerline carrier systems within the same home.
, UPB enjoys one of the broadest range of device types when compared to most protocols and has support from some major manufacturers in the home automation space. Most notably, Leviton and their Omni series of home automation products, as well as the UPB devices they market. UPB is also supported by many major home automation software manufacturers. A few of which are listed below.
Reliability
UPB is a highly reliable protocol for home automation. It is not susceptible to RF interference, signal blockage by walls or short distance broadcast issues like some wireless protocols. UPB transmits on the building's existing wiring and has extensive noise reduction circuitry. This allows it to traverse long distances without issues, even across multiple electrical panels, making it ideal for very large homes. Appliances that have traditionally plagued X10 devices, usually do not affect UPB. In fact, UPB signals can reliably be received by
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https://en.wikipedia.org/wiki/Microbial%20genetics
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Microbial genetics is a subject area within microbiology and genetic engineering. Microbial genetics studies microorganisms for different purposes. The microorganisms that are observed are bacteria, and archaea. Some fungi and protozoa are also subjects used to study in this field. The studies of microorganisms involve studies of genotype and expression system. Genotypes are the inherited compositions of an organism. (Austin, "Genotype," n.d.) Genetic Engineering is a field of work and study within microbial genetics. The usage of recombinant DNA technology is a process of this work. The process involves creating recombinant DNA molecules through manipulating a DNA sequence. That DNA created is then in contact with a host organism. Cloning is also an example of genetic engineering.
Since the discovery of microorganisms by Robert Hooke and Antoni van Leeuwenhoek during the period 1665-1885 they have been used to study many processes and have had applications in various areas of study in genetics.
For example: Microorganisms' rapid growth rates and short generation times are used by scientists to study evolution. Robert Hooke and Antoni van Leeuwenhoek discoveries involved depictions, observations, and descriptions of microorganisms. Mucor is the microfungus that Hooke presented and gave a depiction of. His contribution being, Mucor as the first microorganism to be illustrated. Antoni van Leeuwenhoek’s contribution to the microscopic protozoa and microscopic bacteria yielded t
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https://en.wikipedia.org/wiki/Richard%20Dawkins%3A%20How%20a%20Scientist%20Changed%20the%20Way%20We%20Think
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Richard Dawkins: How a Scientist Changed the Way We Think is a festschrift of 25 essays written in recognition of the life and work of Richard Dawkins. It was published in 2006, to coincide with the 30th anniversary of the publication of The Selfish Gene. A wide range of topics is covered from many fields including evolutionary biology, philosophy, and psychology. Space is also given to writers who are not in full agreement with Dawkins. The book is edited by two of Dawkins' former PhD students, Alan Grafen and Mark Ridley. ()
Reception
The reviews of the book have been mixed, but the controversial title phrase, "How a Scientist Changed the Way We Think" has been explained by considering Dawkins to have worked as an influential educator and concise author, of The Selfish Gene, who promoted the key ideas of others about evolutionary biology, also including some controversial ideas which are not as widely accepted.
As the author of a popular science book, Dawkins had popularized ideas by George Williams about group selection, William Hamilton on the theory of kin selection in evolution, biologist/geneticist John Maynard Smith on evolutionarily stable strategies, and Robert Trivers about reciprocal altruism and competition between siblings versus parent and child.
Contributions
Biology
Andrew F. Read – Ballooning Parrots and Semi-Lunar Germs
Helena Cronin – The Battle of the Sexes Revisited
John Krebs – Richard Dawkins: Intellectual Plumber—and More
Michael Hansell – What is a
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https://en.wikipedia.org/wiki/Radiation%20trapping
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Radiation trapping, imprisonment of resonance radiation, radiative transfer of spectral lines, line transfer or radiation diffusion is a phenomenon in physics whereby radiation may be "trapped" in a system as it is emitted by one atom and absorbed by another.
Classical description
Classically, one can think of radiation trapping as a multiple-scattering phenomena, where a photon is scattered by multiple atoms in a cloud. This motivates treatment as a diffusion problem. As such, one can primarily consider the mean free path of light, defined as the reciprocal of the density of scatterers and the scattering cross section:
One can assume for simplicity that the scattering diagram is isotropic, which ends up being a good approximation for atoms with equally populated sublevels of total angular momentum. In the classical limit, we can think of the electromagnetic energy density as what is being diffused. So, we consider the diffusion constant in three dimensions,
where is the transport time. The transport time accounts for both the group delay between scattering events and Wigner's delay time, which is associated with an elastic scattering process. It is written as
where is the group velocity. When the photons are near resonance, the lifetime of an excited state in the atomic vapor is equal to the transport time, , independent of the detuning. This comes in handy, since the average number of scattering events is the ratio of the time spent in the system to the lifet
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https://en.wikipedia.org/wiki/Toshikazu%20Kawasaki
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is a Japanese paperfolder and origami theorist who is known for his geometrically innovative models. He is particularly famous for his series of fourfold symmetry "roses", all based on a twisting maneuver that allows the petals to seem to curl out from the center of the flower. Kawasaki also teaches mathematics at Sasebo Technical Junior College.
Kawasaki was the first to develop the technique of iso-area folding, which allows the folder to end up with each side of the paper displayed in equal amounts. It consists of building a mirror-symmetrical crease pattern and then collapsing it to find a finished form, usually a geometric shape such as a cube. He also discovered and proved that with any given flat point in an origami model, the sum of alternating angles is always equal to 180 degrees, a result now known as Kawasaki's theorem.
Publications
Origami^6, American Math Society, (2015)
The Greatest Dream Origami, Asahi Press, (2009)
Resources
Kunihiko Kasahara and Toshie Takahama, Origami for the Connoisseur. Japan Publications.
External links
Instructions for folding Toshikazu Kawasaki's Rose
1955 births
Living people
Origami artists
People from Kurume
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https://en.wikipedia.org/wiki/MCQ
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MCQ may refer to
McQ, a 1974 famous crime drama
McQ Inc, an American defense company based in Pennsylvania
Mathematical Citation Quotient, a measure of the impact of a mathematics journal
Multiple choice question
Malvern College Qingdao
IATA code for Miskolc Airport
McQ, a clothing line from Alexander McQueen (brand)
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https://en.wikipedia.org/wiki/John%20N.%20Reeve
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John N. Reeve is an American microbiologist who is the Department Chair of microbiology at Ohio State University, where he is Rod Sharp Professor of Microbiology. He received his bachelor's degree from the University of Birmingham, UK, in 1968, and a Ph.D. in microbiology from the University of British Columbia, Canada. He undertook Postdoctoral appointments at University of Arizona, 1971–1973 and at the Max Planck Institute, W. Berlin, 1974–1979.
He is well known as the discoverer of archaea histones, small DNA-binding proteins which are the precursors of histones in eukaryotes, as evidenced by his many published articles. He won a LExEN Award for his work "Longevity and Diversity of Microorganisms Entrapped in Tropical and Polar Ice Cores".
Publications
L'ubomíra Cubonová; Haruyuki Atomi; Tamotsu Kanai; Masahiro Katano; John N Reeve; Thomas J Santangelo An archaeal histone is required for transformation of Thermococcus kodakarensis.
Thomas J Santangelo; L'ubomíra Cuboňová; John N Reeve Deletion of alternative pathways for reductant recycling in Thermococcus kodakarensis increases hydrogen production
Zhuo Li; Miao Pan; John N Reeve; Thomas J Santangelo; Wei Yuan; Wiebke Chemnitz; James L Edwards; Jerard Hurwitz; Zvi Kelman A novel DNA nuclease is stimulated by association with the GINS complex.
References
External links
Ohio State profile
American microbiologists
Ohio State University faculty
Year of birth missing (living people)
Living people
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https://en.wikipedia.org/wiki/Lebesgue%20differentiation%20theorem
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In mathematics, the Lebesgue differentiation theorem is a theorem of real analysis, which states that for almost every point, the value of an integrable function is the limit of infinitesimal averages taken about the point. The theorem is named for Henri Lebesgue.
Statement
For a Lebesgue integrable real or complex-valued function f on Rn, the indefinite integral is a set function which maps a measurable set A to the Lebesgue integral of , where denotes the characteristic function of the set A. It is usually written
with λ the n–dimensional Lebesgue measure.
The derivative of this integral at x is defined to be
where |B| denotes the volume (i.e., the Lebesgue measure) of a ball B centered at x, and B → x means that the diameter of B tends to 0.
The Lebesgue differentiation theorem states that this derivative exists and is equal to f(x) at almost every point x ∈ Rn. In fact a slightly stronger statement is true. Note that:
The stronger assertion is that the right hand side tends to zero for almost every point x. The points x for which this is true are called the Lebesgue points of f.
A more general version also holds. One may replace the balls B by a family of sets U of bounded eccentricity. This means that there exists some fixed c > 0 such that each set U from the family is contained in a ball B with . It is also assumed that every point x ∈ Rn is contained in arbitrarily small sets from . When these sets shrink to x, the same result holds: for almost ev
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https://en.wikipedia.org/wiki/Ernst%20Pringsheim%20Jr.
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Ernst Pringsheim Jr. or Ernst Georg Pringsheim (October 26, 1881 in Breslau, Lower Silesia – December 26, 1970 in Hannover) was a German Natural scientist and plant physiology.
He taught as a professor for biochemistry and botany, in the University of Berlin, University of Prague, and Cambridge University.
Life
He was a son of Hugo Pringsheim (- 1915, Oppeln, Oberschlesien), and Hedwig Johanna Heymann (1856–1938).
Personal
In 1907 he married Lily Chun (1887–1954); they divorced in 1921, having had five children. He married pharmacist Olga Zimmermann (1902–1992) in Prague in 1929.
References
D. Mollenhauer: "The protistologist Ernst Georg Pringsheim and his four lives", Protist 154(2003), 157–171;
D. Mollenhauer: "Historical aspects of culturing microalgae in Central Europe and the impact of Ernst Georg Pringsheim, a pioneer in algae culture collection", in preparation;
External links
German naturalists
20th-century German botanists
Academic staff of Charles University
1881 births
1970 deaths
Plant physiologists
20th-century naturalists
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https://en.wikipedia.org/wiki/The%20New%20York%20Times%20Guide%20to%20Essential%20Knowledge
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The New York Times Guide to Essential Knowledge: A Desk Reference for the Curious Mind is a single-volume reference book by The New York Times. It exceeds one thousand pages in length.
It covers many topics including:
Architecture
Art
Astronomy
Biology
Chemistry
Dance
Economics, Business, and Finance
Film
Geography
Geology
History
Law
Literature
Drama
Mathematics
Media
Medicine
Music
Mythology
Philosophy
Photography
Physics
Religion
Science
Technology
Sports
There is also a reference library which contains a Writer's Guide, Guide to Nutrition, Nations of the World, U.S. States and cities, languages, biographies and a crossword dictionary.
Prominent New York Times writers have contributed with essays on health, the Supreme Court and war, among other topics.
References
Single-volume general reference works
The New York Times
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https://en.wikipedia.org/wiki/T.%20rex%20%28disambiguation%29
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Tyrannosaurus rex is a species of dinosaur.
T. Rex or T-Rex may also refer to:
Biology
Tachyoryctes rex, the king mole rat, a rodent species found high on Mount Kenya
Thoristella rex, a sea snail species endemic to New Zealand
Trialeurodes rex, a whitefly species found on Sulawesi
Tropidoptera rex, a probably extinct snail species endemic to Oahu
Tyrannasorus rex, a fossil beetle species from the Miocene epoch
Tyrannobdella rex, a leech species found in South America
Tyrannochthonius rex, a pseudoscorpion species found in Australia
Tyrannomolpus rex, a leaf beetle species endemic to New Zealand
Tyrannomyrmex rex, an ant species found in Southeast Asia
Arts, entertainment, and media
Music
Groups and labels
T. Rex (band), a 1970s glam rock band (previously Tyrannosaurus Rex. a 1960s psychedelic folk duo) headed by Marc Bolan
Mickey Finn's T-Rex, a tribute band to the 1970s glam rock band, formed by members of the original band
X-T. Rex, formerly Bill Legend's T.Rex, another tribute band to the 1970s glam rock band, formed by Bill Legend, another member of the original band
T.Rex Wax Company, record label owned by Marc Bolan which released his band's recordings from 1972 onwards
Other uses in music
T. Rex (album), a 1970 studio album by the 1970s band
"T-Rex [Jurassic Park]", a song by Basshunter from The Old Shit album
Other uses in arts, entertainment, and media
T-Rex, the main character of Dinosaur Comics
The Adventures of T-Rex, an American animated
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https://en.wikipedia.org/wiki/Olga%20Vinogradova
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Professor Olga S. Vinogradova (1929–2001) was a specialist in Russian cognitive neuroscience. In 1969 she founded the Laboratory of Systemic Organization of Neurons in the Institute of Biological Physics, Russian Academy of Sciences (Pushchino) and headed this Laboratory till the end of her life.
From the early days of her scientific career, Prof. Vinogradova was fortunate to work with prominent neuropsychologist and neuroscientists. She studied psychology under the supervision of Prof. Alexander Luria, investigated psychophysiology of the orienting reflex with Prof. Evgeny Sokolov, and learned electrophysiology from Prof. Jan Bures.
On the basis of extracellular unit recording from the hippocampus and other relevant structures in awake animals during sensory and electrical stimulation, she developed a hypothesis of information processing in the limbic system. She concluded that the hippocampus is at the core of orienting reflex and works as a comparator determining whether information should be stored in memory (if it is new) or ignored (if it is old). These ideas were developed in her books Orienting Reflex and Its Neurophysiological Mechanisms (Moskva, 1962) and Hippocampus and Memory (Nauka, 1975), and later published in English as a chapter of the book Hippocampus (Plenum Press, 1984) and the review Hippocampus as a comparator system (Hippocampus, 2001, v. 11:578-98).
A significant part of Prof. Vinogradova’s scientific career was devoted to the analysis of the role
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https://en.wikipedia.org/wiki/Gilmore%20David%20Clarke
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Gilmore David Clarke (July 12, 1892 – August 8, 1982) was an American civil engineer and landscape architect who designed many parks and public spaces in and around New York City.
Biography
Born in New York, Clarke went to Cornell University to study landscape architecture and civil engineering, graduating in 1913 with a B.S. degree. After World War I, during which he served as an engineer in the U.S. Army, he served on several architectural commissions, ranging from local to federal level. Amongst others, he was a member of the Architectural Advisory Board for the U.S. Capitol and of the New York State Council of Parks. He was awarded a Gold Medal of Honor by the Architectural League of New York in 1931 for his works in Westchester County.
In 1934 he became a consultant for the New York City Parks Department under parks commissioner Robert Moses. His works in the city include the Central Park Zoo, the Conservatory Garden, the expansion of Riverside Park, and many other public spaces. The following year, he teamed up with Michael Rapuano (1904 – 1975), founding the firm of Clarke & Rapuano. From 1935 to his retirement in 1950 he taught landscape architecture at Cornell University, where he was the Dean of Architecture from 1939 on.
Clarke designed the landscape architecture of the 1939 New York World's Fair, and he and his firm of Clarke & Rapuano were also deeply involved in the design of the 1964 New York World's Fair, which were both held at Flushing Meadows-Corona Park
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https://en.wikipedia.org/wiki/Eugen%20Pavel
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Dr. Eugen Pavel is a Romanian scientist and the claimed inventor of the Hyper CD-ROM.
Dr. Pavel graduated with a physics degree from the University of Bucharest in 1976. He was awarded the Romanian Academy Prize in 1991 and obtained his doctorate in Physics from the Romanian Institute of Atomic Physics in 1992.
He won the "Prix International de l’Organisation Mondiale de la Presse Periodique" and a gold medal at the November 1999 EUREKA Contest in Brussels for inventions that led to the creation of the Hyper CD-ROM. Dr. Pavel has published more than 40 books and articles, and he is the holder of 62 patents and patent applications.
Hyper CD-ROM
The Hyper CD-ROM is a proposed 3D optical data storage medium
which uses Fluorescent Multilayer Disc technology with a reported capacity of 1PB and a theoretical capacity of 100 EB on a single disc. Despite its bold claims the technology has not been shown as a working prototype in the over twenty years since its announcement.
The Hyper CD-ROM technology is patented in 21 countries: the USA, Canada, Japan, Israel and 17 European states.
In an interview about his work on the Hyper CD-ROM, Dr. Pavel stated that "the research for this project is 100% personal, [and] so is the support for experiments."
References
Living people
Romanian computer scientists
Romanian scientists
Romanian inventors
Year of birth missing (living people)
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https://en.wikipedia.org/wiki/Don%20Rees
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Dr. Donald Rees is the former warden of Hugh Stewart Hall in the University of Nottingham for 29 years (1975–2004). Dr. Rees was a highly respected academic, being a professor of mathematics, and a leading member of the University community. He was the last warden to inhabit the Warden's House at Hugh Stewart in its entirety. The Hall library is now named after Dr. Rees in recognition of his service to the Hall, the University and the City.
He arrived in Nottingham with a London Ph.D. in Mathematics and was one of the first tutors recruited at the opening of Lincoln Hall in 1962. As with many of his Welsh countrymen, his twin passions were rugby football and music, being an accomplished pianist in the latter field. According to old Lincolnites of that era he was a lively and popular tutor, and the rugby team especially flourished with his encouragement.
In 1972 he was appointed as Deputy Warden of Cripps Hall and then three years later he made the short move to Hugh Stewart. Certainly he fought hard to maintain the best traditions of Nottingham's Halls, for example keeping a schedule of one Formal Dinner each week, open to all students, when almost all other Halls had reduced to two per term. Additionally Hugh Stewart continually staged concerts of a high standard, often hosting the Sinfonia String Quartet. HM the Queen visited the hall in 1981.
During his time at Hugh Stewart, the University progressively reduced the power and influence of all Wardens, especially wi
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https://en.wikipedia.org/wiki/Charles%20Wright%20%28botanist%29
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Charles Wright (October 29, 1811 – August 11, 1885) was an American botanist.
History
Wright was born in Wethersfield, Connecticut, the son of James Wright and Mary née Goodrich. He studied classics and mathematics at Yale, and in October 1835 moved to Natchez, Mississippi to tutor a plantation owner's family. His employer's business failed two years later, and he moved to Texas, working as a land surveyor and teacher. He surveyed ground for the Pacific Railroad Company. During this time, he also collected plants for Asa Gray. Gray thought of Wright as one of his most trusted collectors.
In 1849, he joined an army expedition (with Gray's help) through Texas, botanising from Galveston to San Antonio and then on to El Paso. But he had to walk most of the 673 miles, (which took over 104 days effort). He collected seeds of Penstemon baccharifolius (Hook), between Texas and El Paso, which were later given to William Hooker. Also, Castilleja lanata (found near the Rio Grande) and Castilleja integra (found in the Organ Mountains, near El Paso). In the spring of 1851, he joined the United States and Mexican Boundary Survey (also with Gray's help).
His collections from these two trips, formed the basis of Gray's Plantae Wrightianae (1852–53). He found around 50 new plants in the area.
Between 1853 and 1856, he took part in the Rodgers-Ringgold North Pacific Exploring and Surveying Expedition, collecting plants in Madeira, Cape Verde, Cape Town, Sydney, Hong Kong, the Bonin Island
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https://en.wikipedia.org/wiki/Lakes%20of%20Wada
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In mathematics, the are three disjoint connected open sets of the plane or open unit square with the counterintuitive property that they all have the same boundary. In other words, for any point selected on the boundary of one of the lakes, the other two lakes' boundaries also contain that point.
More than two sets with the same boundary are said to have the Wada property; examples include Wada basins in dynamical systems. This property is rare in real-world systems.
The lakes of Wada were introduced by , who credited the discovery to Takeo Wada. His construction is similar to the construction by of an indecomposable continuum, and in fact it is possible for the common boundary of the three sets to be an indecomposable continuum.
Construction of the lakes of Wada
The Lakes of Wada are formed by starting with a closed unit square of dry land, and then digging 3 lakes according to the following rule:
On day n = 1, 2, 3,... extend lake n mod 3 (= 0, 1, 2) so that it is open and connected and passes within a distance 1/n of all remaining dry land. This should be done so that the remaining dry land remains homeomorphic to a closed unit square.
After an infinite number of days, the three lakes are still disjoint connected open sets, and the remaining dry land is the boundary of each of the 3 lakes.
For example, the first five days might be (see the image on the right):
Dig a blue lake of width 1/3 passing within /3 of all dry land.
Dig a red lake of width 1/32 passing wit
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https://en.wikipedia.org/wiki/Jenova%20Chen
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Xinghan Chen (; born October 8, 1981), known professionally as Jenova Chen, is a Chinese video game designer. He is the designer of the award-winning games Cloud, Flow, Flower, and Journey, and is co-founder of Thatgamecompany.
Chen is from Shanghai, where he earned a bachelor's degree in computer science with a minor in digital art and design. He moved to the United States, where he earned a master's degree from the University of Southern California's Interactive Media Division. While there he created Cloud and Flow, and met fellow student Kellee Santiago. After a brief period at Maxis working on Spore, he founded Thatgamecompany with Santiago and became the company's creative director. The company signed a three-game deal with Sony Computer Entertainment, and has sold Flow, Flower, and Journey through the PlayStation Network.
As Chen was born in a culture other than the culture he lives in, he tries to make games that appeal universally to all people. His goal with his games is to help video games mature as a medium by making games that inspire emotional responses in the player that other games are lacking. Although he and Thatgamecompany can and have made more traditional games, he does not plan on commercially developing any of them, as he does not think that it fits with their goals as an independent video game developer.
Biography
Chen was born in Shanghai on October 8, 1981, and lived there until 2003. His parents were "a middle-class family". His father worked in t
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https://en.wikipedia.org/wiki/Birmingham%20Solar%20Oscillations%20Network
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The Birmingham Solar Oscillations Network (BiSON) consists of a network of six remote solar observatories monitoring low-degree solar oscillation modes. It is operated by the High Resolution Optical Spectroscopy group of the School of Physics and Astronomy at the University of Birmingham, UK, in collaboration with Sheffield Hallam University, UK. They are funded by the Science and Technology Facilities Council (STFC).
The BiSON has been collecting data continuously on solar oscillations since 1976, making it the longest running helioseismology network with data covering three solar cycles.
Team
Academic staff
Professor Yvonne Elsworth (Head of project)
Professor Bill Chaplin
Research staff
Anne-Marie Broomhall — Helioseismology
Andrea Miglio
Steven Hale
Technical staff
Mr Ian Barnes — Electronics
Mr Barry Jackson — Mechanics
Remote observatories
BiSON operates automated resonant scattering spectrometers in astronomical domes or mirror fed systems. The network was established in 1976 with two permanent stations; the addition of several more sites culminated with the addition of a sixth in 1992. The current sites are:
Mount Wilson Observatory, California, USA
Las Campanas Observatory, Region IV, Chile
Observatorio del Teide, Tenerife, Canary Islands, Spain
South African Astronomical Observatory, Sutherland, South Africa
OTC Earth Station Carnarvon, Carnarvon, WA, Australia
Paul Wild Observatory, Narrabri, NSW, Australia
See also
List of astronomical observ
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https://en.wikipedia.org/wiki/Pat%20Hanrahan
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Patrick M. Hanrahan (born 1954) is an American computer graphics researcher, the Canon USA Professor of Computer Science and Electrical Engineering in the Computer Graphics Laboratory at Stanford University.
His research focuses on rendering algorithms, graphics processing units, as well as scientific illustration and visualization. He has received numerous awards, including the 2019 Turing Award.
Education and academic work
Hanrahan grew up in Green Bay, Wisconsin. He attended the University of Wisconsin–Madison and graduated with a B.S. in nuclear engineering in 1977, continued his education there, and as a graduate student taught a new computer science course in graphics in 1981. One of his first students was an art graduate student, Donna Cox, now known for her art and scientific visualizations. In the 1980s he went to work at the New York Institute of Technology Computer Graphics Laboratory and at Digital Equipment Corporation under Edwin Catmull. He returned to U.W. Madison and completed his Ph.D. in biophysics in 1985.
Career
As a founding employee at Pixar Animation Studios, from 1986 to 1989 Hanrahan was part of the design of the RenderMan Interface Specification and the RenderMan Shading Language.
He was credited in Pixar productions including The Magic Egg (1984), Tin Toy (1988) and Toy Story (1995).
In 1989 Hanrahan joined the faculty of Princeton University. In 1995 he moved to Stanford University. In 2003 Hanrahan co-founded Tableau Software and remains its c
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https://en.wikipedia.org/wiki/Dirty%20Weaponry
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Dirty Weaponry is the second studio album by American hip hop group Killarmy. It was released on August 11, 1998 through Wu-Tang/Priority Records.
Background
Production was mainly handled by member 4th Disciple, except for two tracks that were produced by Allah Mathematics and a track produced by Russ Prez, with the RZA serving as executive producer. It features guest appearances from Wu-Tang Clan affiliate Black Knights member the Holocaust. The album peaked at number 40 on the Billboard 200 and number 13 on the Top R&B/Hip-Hop Albums in the United States.
Track listing
Personnel
Terrance "9th Prince" Hamlin – performer (tracks: 1-7, 9-11, 13)
Domingo "Dom Pachino" Del Valle – performer (tracks: 1-3, 5-11, 13)
Samuel "Beretta 9" Murray – performer (tracks: 1, 3, 5-8, 12)
Rodney "Islord" Stevenson – performer (tracks: 1-3, 5, 8, 10)
Jeryl "Killa Sin" Grant – performer (tracks: 3, 5, 8, 11-13)
Jamal "ShoGun Assasson" Alexander – performer (tracks: 3, 4, 9, 12)
Anthony "Warcloud" Brown – performer (tracks: 6, 9)
Selwyn "4th Disciple" Bougard – producer (tracks: 2-8, 11-13), mixing, arranging
Ronald "Mathematics" Bean – producer (tracks: 1, 9)
Russell "Russ Prez" Pressley – producer (track 10)
Robert "RZA" Diggs – executive producer
Rachelle Clinton – photography
Sherin Baday – coordinator
Arlene Godfrey – coordinator
Jeff Trotter – A&R
Charts
References
External links
1998 albums
Killarmy albums
Priority Records albums
Albums produced by Mathematics
Albums produced by 4t
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https://en.wikipedia.org/wiki/Large%20Volume%20Detector
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The Large Volume Detector (LVD) is a particle physics experiment situated in the Gran Sasso laboratory in Italy and is operated by the Italian Institute of Nuclear Physics (INFN). It has been in operation since June 1992, and is a member of the Supernova Early Warning System. Among other work, the detector should be able to detect neutrinos from our galaxy and possibly nearby galaxies. The LVD uses 840 scintillator counters around a large tank of hydrocarbons. The detector can detect both charged current and neutral current interactions.
In 2012, they published the results of measurements of the speed of CERN Neutrinos to Gran Sasso. The results were consistent with the speed of light. See measurements of neutrino speed.
References
External links
Experiment record for LVD on INSPIRE-HEP
Particle experiments
Neutrino experiments
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https://en.wikipedia.org/wiki/Parafree%20group
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In mathematics, in the realm of group theory, a group is said to be parafree if its quotients by the terms of its lower central series are the same as those of a free group and if it is residually nilpotent (the intersection of the terms of its lower central series is trivial).
Parafree groups share many properties with free groups, making it difficult to distinguish between these two types. Gilbert Baumslag was led to the study of parafree groups in attempts to resolve the conjecture that a group of cohomological dimension one is free. One of his fundamental results is that there exist parafree groups that are not free. With Urs Stammbach, he proved there exists a non-free parafree group with every countable subgroup being free.
References
Baumslag, Gilbert, Groups with the same lower central sequence as a relatively free group. I. The groups. Trans. Amer. Math. Soc. 129 1967 308--321.
Baumslag, Gilbert; Stammbach, Urs, A non-free parafree group all of whose countable subgroups are free. Math. Z. 148 (1976), no. 1, 63--65.
External links
Parafree one-relator groups
Properties of groups
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https://en.wikipedia.org/wiki/Complemented%20group
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In mathematics, in the realm of group theory, the term complemented group is used in two distinct, but similar ways.
In , a complemented group is one in which every subgroup has a group-theoretic complement. Such groups are called completely factorizable groups in the Russian literature, following and .
The following are equivalent for any finite group G:
G is complemented
G is a subgroup of a direct product of groups of square-free order (a special type of Z-group)
G is a supersolvable group with elementary abelian Sylow subgroups (a special type of A-group), .
Later, in , a group is said to be complemented if the lattice of subgroups is a complemented lattice, that is, if for every subgroup H there is a subgroup K such that H ∩ K = 1 and ⟨H, K ⟩ is the whole group. Hall's definition required in addition that H and K permute, that is, that HK = { hk : h in H, k in K } form a subgroup. Such groups are also called K-groups in the Italian and lattice theoretic literature, such as . The Frattini subgroup of a K-group is trivial; if a group has a core-free maximal subgroup that is a K-group, then it itself is a K-group; hence subgroups of K-groups need not be K-groups, but quotient groups and direct products of K-groups are K-groups, . In it is shown that every finite simple group is a complemented group. Note that in the classification of finite simple groups, K-group is more used to mean a group whose proper subgroups only have composition factors amongst t
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https://en.wikipedia.org/wiki/Mitointeractome
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Mitointeractome is a mitochondrial protein interactome database.
References
External links
Mitointeractome
Molecular biology
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https://en.wikipedia.org/wiki/Quasiconvex%20function
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In mathematics, a quasiconvex function is a real-valued function defined on an interval or on a convex subset of a real vector space such that the inverse image of any set of the form is a convex set. For a function of a single variable, along any stretch of the curve the highest point is one of the endpoints. The negative of a quasiconvex function is said to be quasiconcave.
All convex functions are also quasiconvex, but not all quasiconvex functions are convex, so quasiconvexity is a generalization of convexity. Univariate unimodal functions are quasiconvex or quasiconcave, however this is not necessarily the case for functions with multiple arguments. For example, the 2-dimensional Rosenbrock function is unimodal but not quasiconvex and functions with star-convex sublevel sets can be unimodal without being quasiconvex.
Definition and properties
A function defined on a convex subset of a real vector space is quasiconvex if for all and we have
In words, if is such that it is always true that a point directly between two other points does not give a higher value of the function than both of the other points do, then is quasiconvex. Note that the points and , and the point directly between them, can be points on a line or more generally points in n-dimensional space.
An alternative way (see introduction) of defining a quasi-convex function is to require that each sublevel set
is a convex set.
If furthermore
for all and , then is strictly quasiconvex. T
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https://en.wikipedia.org/wiki/Self-averaging
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A self-averaging physical property of a disordered system is one that can be described by averaging over a sufficiently large sample. The concept was introduced by Ilya Mikhailovich Lifshitz.
Definition
Frequently in physics one comes across situations where quenched randomness plays an important role. Any physical property X of such a system, would require an averaging over all disorder realisations. The system can be completely described by the average [X] where [...] denotes averaging over realisations (“averaging over samples”) provided the relative variance RX = VX / [X]2 → 0 as N→∞, where VX = [X2] − [X]2 and N denotes the size of the realisation. In such a scenario a single large system is sufficient to represent the whole ensemble. Such quantities are called self-averaging. Away from criticality, when the larger lattice is built from smaller blocks, then due to the additivity property of an extensive quantity, the central limit theorem guarantees that RX ~ N−1 thereby ensuring self-averaging. On the other hand, at the critical point, the question whether is self-averaging or not becomes nontrivial, due to long range correlations.
Non self-averaging systems
At the pure critical point randomness is classified as relevant if, by the standard definition of relevance, it leads to a change in the critical behaviour (i.e., the critical exponents) of the pure system. It has been shown by recent renormalization group and numerical studies that self-averaging proper
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https://en.wikipedia.org/wiki/Fractional%20crystallization%20%28chemistry%29
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In chemistry, fractional crystallization is a method of refining substances based on differences in their solubility. It fractionates via differences in crystallization (forming of crystals). If a mixture of two or more substances in solution are allowed to crystallize, for example by allowing the temperature of the solution to decrease or increase, the precipitate will contain more of the least soluble substance. The proportion of components in the precipitate will depend on their solubility products. If the solubility products are very similar, a cascade process will be needed to effectuate a complete separation.
This technique is often used in chemical engineering to obtain pure substances, or to recover saleable products from waste solutions.
Fractional crystallization can be used to separate solid-solid mixtures. An example of this is separating KNO3 and KClO3.
See also
Cold Water Extraction
Fractional crystallization (geology)
Fractional freezing
Laser-heated pedestal growth
Pumpable ice technology
Recrystallization (chemistry)
Seed crystal
Single crystal
References
"Small Molecule Crystalization" (PDF) at Illinois Institute of Technology website
Fractionation
Phase transitions
Methods of crystal growth
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https://en.wikipedia.org/wiki/Extremally%20disconnected%20space
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In mathematics, an extremally disconnected space is a topological space in which the closure of every open set is open. (The term "extremally disconnected" is correct, even though the word "extremally" does not appear in most dictionaries, and is sometimes mistaken by spellcheckers for the homophone extremely disconnected.)
An extremally disconnected space that is also compact and Hausdorff is sometimes called a Stonean space. This is not the same as a Stone space, which is a totally disconnected compact Hausdorff space. Every Stonean space is a Stone space, but not vice versa. In the duality between Stone spaces and Boolean algebras, the Stonean spaces correspond to the complete Boolean algebras.
An extremally disconnected first-countable collectionwise Hausdorff space must be discrete. In particular, for metric spaces, the property of being extremally disconnected (the closure of every open set is open) is equivalent to the property of being discrete (every set is open).
Examples
Every discrete space is extremally disconnected. Every indiscrete space is both extremally disconnected and connected.
The Stone–Čech compactification of a discrete space is extremally disconnected.
The spectrum of an abelian von Neumann algebra is extremally disconnected.
Any commutative AW*-algebra is isomorphic to where is extremally disconnected, compact and Hausdorff.
Any infinite space with the cofinite topology is both extremally disconnected and connected. More generally, every
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https://en.wikipedia.org/wiki/Paranormal%20space
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In mathematics, in the realm of topology, a paranormal space is a topological space in which every countable discrete collection of closed sets has a locally finite open expansion.
See also
– a topological space in which every two disjoint closed sets have disjoint open neighborhoods
– a topological space in which every open cover admits an open locally finite refinement
References
Properties of topological spaces
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https://en.wikipedia.org/wiki/Rational%20representation
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In mathematics, in the representation theory of algebraic groups, a linear representation of an algebraic group is said to be rational if, viewed as a map from the group to the general linear group, it is a rational map of algebraic varieties.
Finite direct sums and products of rational representations are rational.
A rational module is a module that can be expressed as a sum (not necessarily direct) of rational representations.
References
Springer Online Reference Works: Rational Representation
Representation theory of algebraic groups
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https://en.wikipedia.org/wiki/Observable%20subgroup
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In mathematics, in the representation theory of algebraic groups, an observable subgroup is an algebraic subgroup of a linear algebraic group whose every finite-dimensional rational representation arises as the restriction to the subgroup of a finite-dimensional rational representation of the whole group.
An equivalent formulation, in case the base field is closed, is that K is an observable subgroup of G if and only if the quotient variety G/K is a quasi-affine variety.
Some basic facts about observable subgroups:
Every normal algebraic subgroup of an algebraic group is observable.
Every observable subgroup of an observable subgroup is observable.
External links
Extensions of Representations of algebraic linear groups
Representation theory of algebraic groups
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https://en.wikipedia.org/wiki/Jane%20Denton
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Jane Denton, , (born 30 June 1953) is a United Kingdom nurse and midwife notable for her contributions to fertility nursing and genetics. She was made a Fellow of the Royal College of Nursing in 2006.
Early life
She attended the Nottingham Bluecoat Grammar School (now the Nottingham Bluecoat Academy).
Career
She was a contributor to the development of the UK's first IVF programme. She served as nursing director of the Hallam Medical Centre, and was a founder member of the RCN Fertility Nurse Group that lobbied for the development of the current Human Fertilisation and Embryology Authority (HFEA) Act.
In 1992 she was named the first nurse appointed to the HFEA, which regulates and inspects all UK clinics providing IVF, donor insemination or the storage of eggs, sperm or embryos.
In her current role as Director of the Multiple Births Foundation, she has contributed to significant change in public and professional perception and attitudes towards multiple births.
Honours
She was appointed a CBE in the Queen's Birthday Honours List in June 2007 for services to health care.
References
English nurses
British nursing administrators
British midwives
Commanders of the Order of the British Empire
1953 births
Fellows of the Royal College of Nursing
People educated at Nottingham Bluecoat Academy
People from Nottingham
Living people
British nurses
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https://en.wikipedia.org/wiki/Landau%27s%20problems
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At the 1912 International Congress of Mathematicians, Edmund Landau listed four basic problems about prime numbers. These problems were characterised in his speech as "unattackable at the present state of mathematics" and are now known as Landau's problems. They are as follows:
Goldbach's conjecture: Can every even integer greater than 2 be written as the sum of two primes?
Twin prime conjecture: Are there infinitely many primes p such that p + 2 is prime?
Legendre's conjecture: Does there always exist at least one prime between consecutive perfect squares?
Are there infinitely many primes p such that p − 1 is a perfect square? In other words: Are there infinitely many primes of the form n2 + 1?
, all four problems are unresolved.
Progress toward solutions
Goldbach's conjecture
Goldbach's weak conjecture, every odd number greater than 5 can be expressed as the sum of three primes, is a consequence of Goldbach's conjecture. Ivan Vinogradov proved it for large enough n (Vinogradov's theorem) in 1937, and Harald Helfgott extended this to a full proof of Goldbach's weak conjecture in 2013.
Chen's theorem, another weakening of Goldbach's conjecture, proves that for all sufficiently large n, where p is prime and q is either prime or semiprime. Bordignon, Johnston, and Starichkova, correcting and improving on Yamada, proved an explicit version of Chen's theorem: every even number greater than is the sum of a prime and a product of at most two primes. Bordignon & Starichkov
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https://en.wikipedia.org/wiki/Rothe%E2%80%93Hagen%20identity
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In mathematics, the Rothe–Hagen identity is a mathematical identity valid for all complex numbers () except where its denominators vanish:
It is a generalization of Vandermonde's identity, and is named after Heinrich August Rothe and Johann Georg Hagen.
References
.
. See especially pp. 89–91.
. As cited by .
.
. As cited by .
Factorial and binomial topics
Mathematical identities
Complex analysis
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https://en.wikipedia.org/wiki/Breaking%20wave
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In fluid dynamics and nautical terminology, a breaking wave or breaker is a wave with enough energy to "break" at its peak, reaching a critical level at which linear energy transforms into wave turbulence energy with a distinct forward curve. At this point, simple physical models that describe wave dynamics often become invalid, particularly those that assume linear behaviour.
The most generally familiar sort of breaking wave is the breaking of water surface waves on a coastline. Wave breaking generally occurs where the amplitude reaches the point that the crest of the wave actually overturns. Certain other effects in fluid dynamics have also been termed "breaking waves", partly by analogy with water surface waves. In meteorology, atmospheric gravity waves are said to break when the wave produces regions where the potential temperature decreases with height, leading to energy dissipation through convective instability; likewise, Rossby waves are said to break when the potential vorticity gradient is overturned. Wave breaking also occurs in plasmas, when the particle velocities exceed the wave's phase speed. Another application in plasma physics is plasma expansion into a vacuum, in which the process of wave breaking and the subsequent development of a fast ion peak is described by the Sack-Schamel equation.
A reef or spot of shallow water such as a shoal against which waves break may also be known as a breaker.
Types
Breaking of water surface waves may occur anywhere tha
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https://en.wikipedia.org/wiki/Bone%20density
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Bone density, or bone mineral density, is the amount of bone mineral in bone tissue. The concept is of mass of mineral per volume of bone (relating to density in the physics sense), although clinically it is measured by proxy according to optical density per square centimetre of bone surface upon imaging. Bone density measurement is used in clinical medicine as an indirect indicator of osteoporosis and fracture risk. It is measured by a procedure called densitometry, often performed in the radiology or nuclear medicine departments of hospitals or clinics. The measurement is painless and non-invasive and involves low radiation exposure. Measurements are most commonly made over the lumbar spine and over the upper part of the hip. The forearm may be scanned if the hip and lumbar spine are not accessible.
There is a statistical association between poor bone density and higher probability of fracture. Fractures of the legs and pelvis due to falls are a significant public health problem, especially in elderly women, leading to much medical cost, inability to live independently and even risk of death. Bone density measurements are used to screen people for osteoporosis risk and to identify those who might benefit from measures to improve bone strength.
Testing
A bone density test may detect osteoporosis or osteopenia. The usual response to either of these indications is consultation with a physician. Bone density tests are not recommended for people without risk factors for weak b
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https://en.wikipedia.org/wiki/Grosshans%20subgroup
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In mathematics, in the representation theory of algebraic groups, a Grosshans subgroup, named after Frank Grosshans, is an algebraic subgroup of an algebraic group that is an observable subgroup for which the ring of functions on the quotient variety is finitely generated.
References
External links
Invariants of Unipotent subgroups
Representation theory of algebraic groups
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https://en.wikipedia.org/wiki/Julie%20Angus
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Julie Angus (née Wafaei, born 1974) is a Canadian rower, adventurer, writer, cyclist, and entrepreneur, married to the explorer Colin Angus.
Julie has an undergraduate degree from McMaster University, an honours in biology and psychology; which she obtained in 1997. She has a Masters of Science from the University of Victoria, where she specialized in molecular biology. She also studied at the University of Leeds for a year. After graduation she worked in the area of venture capital, technology transfer, and business development. She met Colin Angus in 2003, and they were married in 2007. Julie and Colin have two sons: Leif, born September 2010, and Oliver, born June 2014.
Julie has completed a number of adventures that include being the first woman to row across the Atlantic Ocean from mainland to mainland, cycling and rowing 7,000 km (4,350 miles) from Scotland to Syria and organizing a National Geographic sponsored expedition to research the history of the olive tree. Julie has received awards for her achievements such as the National Geographic Adventurer of the Year award, University of Victoria Distinguished Alumni Award, and McMaster University Young Alumni Award. Julie has written three books, Rowboat in a Hurricane (2008), Rowed Trip (2009) and Olive Odyssey (2014), and is a professional speaker.
Julie has pursued multiple entrepreneurial activities and is currently the CEO and co-founder of Open Ocean Robotics, a company she founded with her husband Colin Angus
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https://en.wikipedia.org/wiki/AP%20Physics%20C%3A%20Electricity%20and%20Magnetism
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Advanced Placement (AP) Physics C: Electricity and Magnetism (also known as AP Physics C: E&M or AP E&M) is an introductory physics course administered by the College Board as part of its Advanced Placement program. It is intended to proxy a second-semester calculus-based university course in electricity and magnetism. The content of Physics C: E&M overlaps with that of AP Physics 2, but Physics 2 is algebra-based and covers other topics outside of electromagnetism, while Physics C is calculus-based and only covers electromagnetism. Physics C: E&M may be combined with its mechanics counterpart to form a year-long course that prepares for both exams.
Course content
E&M is equivalent to an introductory college course in electricity and magnetism for physics or engineering majors. The course modules are:
Electrostatics
Conductors, capacitors, and dielectrics
Electric circuits
Magnetic fields
Electromagnetism.
Methods of calculus are used wherever appropriate in formulating physical principles and in applying them to physical problems. Therefore, students should have completed or be concurrently enrolled in a calculus class.
AP test
The course culminates in an optional exam for which high-performing students may receive some credit towards their college coursework, depending on the institution.
Registration
The AP examination for AP Physics C: Electricity and Magnetism is separate from the AP examination for AP Physics C: Mechanics. Before 2006, test-takers paid only on
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https://en.wikipedia.org/wiki/Chebyshev%20function
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In mathematics, the Chebyshev function is either a scalarising function (Tchebycheff function) or one of two related functions. The first Chebyshev function or is given by
where denotes the natural logarithm, with the sum extending over all prime numbers that are less than or equal to .
The second Chebyshev function is defined similarly, with the sum extending over all prime powers not exceeding
where is the von Mangoldt function. The Chebyshev functions, especially the second one , are often used in proofs related to prime numbers, because it is typically simpler to work with them than with the prime-counting function, (see the exact formula below.) Both Chebyshev functions are asymptotic to , a statement equivalent to the prime number theorem.
Tchebycheff function, Chebyshev utility function, or weighted Tchebycheff scalarizing function is used when one has several functions to be minimized and one wants to "scalarize" them to a single function:
By minimizing this function for different values of , one obtains every point on a Pareto front, even in the nonconvex parts. Often the functions to be minimized are not but for some scalars . Then
All three functions are named in honour of Pafnuty Chebyshev.
Relationships
The second Chebyshev function can be seen to be related to the first by writing it as
where is the unique integer such that and . The values of are given in . A more direct relationship is given by
Note that this last sum has only a finite
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https://en.wikipedia.org/wiki/Pierre%20Danon
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Pierre Danon (born 1956) is a French entrepreneur. He currently sits on the board of directors of several companies in Europe. He is Chairman of SoLocal Group in Paris. He is also the Executive Chairman of Volia in Kyiv.
Education
Danon earned a degree in civil engineering from the École nationale des ponts et chaussées, a Master's in Law degree from Panthéon-Assas University, and an MBA from the Institut Superieur des Affaires (HEC School of Management MBA, Paris).
Career
Executive management and Chairmanship of listed companies
Danon worked for 20 years at Xerox in the areas of finance, sales, marketing, customer service, and research. His career, which began in France, continues in various European countries and the United States. In 1998, Danon became President of Xerox Europe, the operational arm of Xerox Corporation in Europe.
In September 2000, Danon was appointed CEO of BT Retail where he is responsible for relations with over 21 million UK customers from individuals to enterprises large and small. BT Retail then employs 60,000 people and its annual turnover is around 13.4 billion pounds. Danon is also a member of the Board of Directors of British Telecom.
In March 2005, he is appointed Chief Operating Officer of Capgemini Group, a management consulting and IT services group that employs approximately 50,000 people in more than 30 countries for a total turnover of 6.3 billion euros. Danon has successfully turned around Capgemini's business in the United States an
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https://en.wikipedia.org/wiki/Emil%20Skamene
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Emil Skamene, (born 27 August 1941) is a Canadian Immunologist and medical researcher.
He is the Director of Research for the McGill University Health Centre, the Director of the Centre for the Study of Host Resistance, and a Professor in the Department of Medicine, the Department of Human Genetics, and the Institute of Parasitology.
In 2005, he was made a Knight (Chevalier) of the National Order of Quebec. In 2001, he was awarded the Prix Armand-Frappier. In 1997, he was made a Fellow of the Royal Society of Canada.
External links
McGill University faculty page
National Order of Quebec citation
Prix Armand-Frappier citation
1941 births
Living people
Canadian medical researchers
Fellows of the Royal Society of Canada
Canadian immunologists
Academic staff of McGill University
Knights of the National Order of Quebec
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https://en.wikipedia.org/wiki/William%20Johnson%20Sollas
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Prof William Johnson Sollas PGS FRS FRSE LLD (30 May 1849 – 20 October 1936) was a British geologist and anthropologist. After studying at the City of London School, the Royal College of Chemistry and the Royal School of Mines he matriculated to St. John's College, Cambridge, where he was awarded First Class Honours in geology. After some time spent as a University Extension lecturer he became lecturer in Geology and Zoology at University College, Bristol in 1879, where he stayed until he was offered the post of Professor of Geology at Trinity College Dublin. In 1897 he was offered the post of Professor of Geology at the University of Oxford, which he accepted.
Considered "one of the last true geological polymaths", Sollas worked in a number of areas including the study of sponges, brachiopods and petrological research, and during his lifetime published 180 papers and wrote three books. He also invented the serial sectioning device for the study of fossils. His biggest contribution at Oxford was in expanding the University geology department, hiring new Demonstrators and Lecturers and expanding the facilities available to students. Described as "eccentric" in his final years, he left much of the running of the Department to J.A. Douglas while he concentrated on research, finally dying in office on 20 October 1936.
Early life and education
Sollas was born in Birmingham on 30 May 1849 to William Henry Sollas, a ship owner, and his wife Emma Wheatley. He was educated at the Ci
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https://en.wikipedia.org/wiki/Malcolm%20Green%20%28chemist%29
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Malcolm Leslie Hodder Green (16 April 1936 – 24 July 2020) was Professor of Inorganic Chemistry at the University of Oxford. He made many contributions to organometallic chemistry.
Education
Born in Eastleigh, Hampshire, he was educated at Denstone College and received his Bachelor of Science degree from Acton Technical College (London University External Regulations) in 1956 and his PhD from Imperial College of Science and Technology in 1959 for research carried out under the supervision of Geoffrey Wilkinson.
Career
After his PhD, Green undertook a postdoctoral research year with Wilkinson before moving to the University of Cambridge in 1960 as Assistant Lecturer and being appointed a Fellow of Corpus Christi College, Cambridge in 1961. In 1963 he was appointed a Septcentenary Fellow of Inorganic Chemistry at Balliol College, Oxford and a Departmental Demonstrator at the University of Oxford. In 1965 he was made a Lecturer and he was also a Royal Society Senior Research Fellow in Oxford 1979–86. In 1989 he was appointed Professor of Inorganic Chemistry and Head of the Inorganic Chemistry Laboratory at Oxford and Fellow of St Catherine's College, Oxford. In 2004 he became an Emeritus Research Professor. He was a co-founder of the Oxford Catalysts Group plc in 2006.
Green held many visiting positions including: Visiting Professor, Ecole de Chimie and Institute des Substances Naturelles, Paris (1972), Alfred P. Sloan Visiting Professor, Harvard University (1975), Sherman
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https://en.wikipedia.org/wiki/Abels
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Abels may refer to:
People
Abels (surname)
Companies and organizations
Abels Shipbuilders, based in Bristol, England
Abels Moving Services, of Suffolk, England
Places
Abels Harbour, Newfoundland and Labrador
Earl Abel's, a restaurant in Texas
Music
Cains & Abels, an American musical group
Mathematics
Abel's test, a mathematical test
Abel's theorem, a mathematical theorem
Abel's identity, a mathematical equation
Abel's inequality, a mathematical parameter
Fiction
Abel's Island, a children's novel
Abel's Island (film), an animated film based on the book
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https://en.wikipedia.org/wiki/Inner%20measure
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In mathematics, in particular in measure theory, an inner measure is a function on the power set of a given set, with values in the extended real numbers, satisfying some technical conditions. Intuitively, the inner measure of a set is a lower bound of the size of that set.
Definition
An inner measure is a set function
defined on all subsets of a set that satisfies the following conditions:
Null empty set: The empty set has zero inner measure (see also: measure zero); that is,
Superadditive: For any disjoint sets and
Limits of decreasing towers: For any sequence of sets such that for each and
Infinity must be approached: If for a set then for every positive real number there exists some such that
The inner measure induced by a measure
Let be a σ-algebra over a set and be a measure on
Then the inner measure induced by is defined by
Essentially gives a lower bound of the size of any set by ensuring it is at least as big as the -measure of any of its -measurable subsets. Even though the set function is usually not a measure, shares the following properties with measures:
is non-negative,
If then
Measure completion
Induced inner measures are often used in combination with outer measures to extend a measure to a larger σ-algebra. If is a finite measure defined on a σ-algebra over and and are corresponding induced outer and inner measures, then the sets such that form a σ-algebra with .
The set function defined by
for all i
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https://en.wikipedia.org/wiki/Louis%20Dollo
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Louis Antoine Marie Joseph Dollo (Lille, 7 December 1857 – Brussels, 19 April 1931) was a Belgian palaeontologist, known for his work on dinosaurs. He also posited that evolution is not reversible, known as Dollo's law. Together with the Austrian Othenio Abel, Dollo established the principles of paleobiology.
Early life
Louis Dollo was born in Lille, Nord-Pas-de-Calais, a scion of an old Breton family. He studied at the École centrale de Lille, with geologist Jules Gosselet and zoologist Alfred Giard, both of whom influenced the young Dollo. In 1877, he graduated with a degree in engineering. After his graduation, he worked in the mining industry for five years, but simultaneously developed a passion for paleontology. In 1879, he moved to Brussels.
Iguanodon spp.
For three years, starting in 1878, he supervised the excavation of the famous, multiple Iguanodon find at Bernissart, Belgium. He devoted himself to their study as a scientific passion, initially concurrently with his engineering career. In 1882 he became an assistant naturalist at the Royal Belgian Institute of Natural Sciences. Dollo was given membership in the Société des sciences de Lille and the Geological Society of London.
From 1882 to 1885, while he was head of the vertebrate fossil section of the Royal Institute, Dollo worked on reconstructing the skeletons of the iguanodons, as it was necessary to display them on their hind legs. The first one was assembled in the interior of an unused church that Doll
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https://en.wikipedia.org/wiki/Accessible%20surface%20area
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The accessible surface area (ASA) or solvent-accessible surface area (SASA) is the surface area of a biomolecule that is accessible to a solvent. Measurement of ASA is usually described in units of square angstroms (a standard unit of measurement in molecular biology). ASA was first described by Lee & Richards in 1971 and is sometimes called the Lee-Richards molecular surface. ASA is typically calculated using the 'rolling ball' algorithm developed by Shrake & Rupley in 1973. This algorithm uses a sphere (of solvent) of a particular radius to 'probe' the surface of the molecule.
Methods of calculating ASA
Shrake–Rupley algorithm
The Shrake–Rupley algorithm is a numerical method that draws a mesh of points equidistant from each atom of the molecule and uses the number of these points that are solvent accessible to determine the surface area. The points are drawn at a water molecule's estimated radius beyond the van der Waals radius, which is effectively similar to ‘rolling a ball’ along the surface. All points are checked against the surface of neighboring atoms to determine whether they are buried or accessible. The number of points accessible is multiplied by the portion of surface area each point represents to calculate the ASA. The choice of the 'probe radius' does have an effect on the observed surface area, as using a smaller probe radius detects more surface details and therefore reports a larger surface. A typical value is 1.4Å, which approximates the radius of a wat
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https://en.wikipedia.org/wiki/Menv
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Menv may refer to:
Menv, animation software related to Marionette and used for example in the production of Tin Toy
MEnv, abbreviation of 'Master of Environmental Science', an environmental degree
MENV, the early call sign for the ocean liner SS Elisabethville
Ministry of the Environment
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https://en.wikipedia.org/wiki/Eamonn%20Healy
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Eamonn Francis Healy (born 25 September 1958) is an Irish-American professor of chemistry, organic chemistry, and biochemistry at St. Edward's University in Austin, Texas, where his research focuses on the design of structure-activity probes to elucidate enzymatic activity. Targets include HIV-1 integrase, the c-Kit and src-abl proteins, and the metalloproteinases associated with CXCL16 shedding.
He was born in Newcastle West, County Limerick, Ireland. He received a doctorate in chemistry in 1984 from the University of Texas at Austin where he was a student of Dr. Michael J. S. Dewar. As a member of the Dewar research group he co-authored Austin Model 1, or AM1, a semi-empirical method for the quantum calculation of molecular electronic structure in computational chemistry. He appears in Richard Linklater's 2001 film Waking Life explaining "telescopic" and technological evolution. Dr. Healy is married to Shelley Bueche.
See also
Semi-empirical quantum chemistry methods
Selected publications
E.F. Healy "In Defense of a Heuristic Interpretation of Quantum Mechanics", J. Chem. Educ. 2010, 87, 559–563.
Eamonn F. Healy, Skylar Johnson, Charles Hauser, and Peter King "Tyrosine kinase inhibition: Ligand binding and conformational change in c-Kit and c-Abl." FEBS Lett. 2009, 583, 2899-2906
Eamonn F. Healy, Jonathan Sanders, Peter J. King and W. Edward Robinson, Jr "A Docking Study of L-Chicoric Acid with HIV-1 Integrase" J Mol. Graph. Model. 2009, 27, 14.
E. F. Healy, C. G
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https://en.wikipedia.org/wiki/Madis%20K%C3%B5iv
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Madis Kõiv (5 December 1929 – 24 September 2014) was an Estonian writer, philosopher and physicist.
Education
Kõiv attended school in Tartu after the second World War, graduating in the early 1950s with a degree in nuclear physics. Kõiv worked as a scientist and lecturer until 1991.
Career as a playwright
Kõiv always entertained a fascination with and love for literature. He wrote mostly for personal entertainment until the 1950s, when he became active in Estonian literary circles. His earliest published works were written with friends from these circles. He also wrote under a pseudonym for several years.
His first published work was a play called Küüni täitmine (Filling the Hay Barn) written as a collaboration between Kõiv (using his pseudonym Jaanus Andreus Nooremb) and Hando Runnel in 1978. In 1999, the play was successfully produced for the first time.
Kõiv then wrote two pieces with Vaino Vahing. The first was a play titled Faehlmann. Keskpäev. Õhtuselgus. (Faehlmann. Noon. Evening Clarity.) The two also wrote the dialogue novel Endspiel. Laskumine orgu. (Endspiel. Descent into the Valley.)
Just before the end of the decade, Kõiv began to publish works he had previously written for his own amusement under his own name. Kõiv became the most essential Estonian playwright of the 1950s and 1960s.
In the early 1990s, Kõiv began to gain fame. In 1991 and 1993, he won the Tuglas short story award for Film and The Life of an Eternal Physicus, respectively. He won the annu
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https://en.wikipedia.org/wiki/Laboratori%20Nazionali%20del%20Gran%20Sasso
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Laboratori Nazionali del Gran Sasso (LNGS) is the largest underground research center in the world. Situated below Gran Sasso mountain in Italy, it is well known for particle physics research by the INFN. In addition to a surface portion of the laboratory, there are extensive underground facilities beneath the mountain. The nearest towns are L'Aquila and Teramo. The facility is located about 120 km from Rome.
The primary mission of the laboratory is to host experiments that require a low background environment in the fields of astroparticle physics and nuclear astrophysics and other disciplines that can profit of its characteristics and of its infrastructures.
The LNGS is, like the three other European underground astroparticle laboratories (Laboratoire Souterrain de Modane, Laboratorio subterráneo de Canfranc, and Boulby Underground Laboratory), a member of the coordinating group ILIAS.
Facilities
The laboratory consists of a surface facility, located within the Gran Sasso and Monti della Laga National Park, and extensive underground facilities located next to the 10 km long Traforo del Gran Sasso freeway tunnel.
The first large experiments at LNGS ran in 1989; the facilities were later expanded, and it is now the largest underground laboratory in the world.
There are three main barrel vaulted experimental halls, each approximately 20 m wide, 18 m tall, and 100 m long. These provide roughly 3×20×100= of floor space and 3×20×(8+10×π/4)×100= of volume. Including smaller sp
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https://en.wikipedia.org/wiki/Mathematics%20and%20Science%20High%20School%20at%20Clover%20Hill
|
The Chesterfield County Mathematics and Science High School at Clover Hill is a magnet school in Midlothian, Virginia. The school, which is on the campus of Clover Hill High School, opened in September 1994. The school is a member of the National Consortium for Specialized Secondary Schools of Mathematics, Science, and Technology (NCSSSMST). It was known as the Renaissance Program early in its history.
References
External links
School Website
Public high schools in Virginia
Educational institutions established in 1994
Schools in Chesterfield County, Virginia
Magnet schools in Virginia
1994 establishments in Virginia
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https://en.wikipedia.org/wiki/Nicola%20Cabibbo
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Nicola Cabibbo (10 April 1935 – 16 August 2010) was an Italian physicist, best known for his work on the weak interaction.
Life
Cabibbo, son of a Sicilian lawyer, was born in Rome. He graduated in theoretical physics at the Università di Roma "Sapienza University of Rome" in 1958 under the supervision of Bruno Touschek. In 1963, while working at CERN, Cabibbo found the solution to the puzzle of the weak decays of strange particles, formulating what came to be known as Cabibbo universality. In 1967 Nicola settled back in Rome where he taught theoretical physics and created a large school. He was president of the INFN from 1983 to 1992, during which time the Gran Sasso Laboratory was inaugurated. He was also president of the Italian energy agency, ENEA, from 1993 to 1998, and was president of the Pontifical Academy of Sciences from 1993 until his death. In 2004, Cabibbo spent a year at CERN as guest professor, joining the NA48/2 collaboration.
Work
Cabibbo's major work on the weak interaction originated from a need to explain two observed phenomena:
The transitions between up and down quarks, between electrons and electron neutrinos, and between muons and muon neutrinos had similar likelihood of occurring (similar amplitudes); and
The transitions with change in strangeness had amplitudes equal to one fourth of those with no change in strangeness.
Cabibbo addressed these issues, following Murray Gell-Mann and Maurice Lévy, by postulating weak universality, which involves a
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https://en.wikipedia.org/wiki/Nissl%20body
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In cellular neuroscience, Nissl bodies (also called Nissl granules, Nissl substance or tigroid substance) are discrete granular structures in neurons that consist of rough endoplasmic reticulum, a collection of parallel, membrane-bound cisternae studded with ribosomes on the cytosolic surface of the membranes. Nissl bodies were named after Franz Nissl, a German neuropathologist who invented the staining method bearing his name (Nissl staining). The term "Nissl bodies" generally refers to discrete clumps of rough endoplasmic reticulum and free ribosomes in nerve cells. Masses of rough endoplasmic reticulum also occur in some non-neuronal cells, where they are referred to as ergastoplasm, basophilic bodies, or chromophilic substance. While these organelles differ in some ways from Nissl bodies in neurons, large amounts of rough endoplasmic reticulum are generally linked to the copious production of proteins.
Staining
"Nissl stains" refers to various basic dyes that selectively label negatively charged molecules such as DNA and RNA. Because ribosomes are rich in ribosomal RNA, they are strongly basophilic ("base-loving"). The dense accumulation of membrane-bound and free ribosomes in Nissl bodies results in their intense coloration by Nissl stains, allowing them to be seen with a light microscope.
Size and distribution
Nissl bodies occur in the somata and dendrites of neurons, though not in the axon or axon hillock. They vary in size, shape, and intracellular location; they ar
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https://en.wikipedia.org/wiki/Ck1
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Ck1 or CK1 may refer to:
Transportation
AIDC F-CK-1 Ching-kuo, the Taiwanese fighter jet
the F-16 variant, see F-16 Fighting Falcon variants
Chang Kong CK-1, the radio-controlled target drone
Cicaré CK.1, the Argentine helicopter
the locomotive, see CK class
Biochemistry
Keratin 1
the cytokeratin, see Type II keratin
Casein kinase 1, a family of protein kinases
Asteroids
1994 CK1, see 10146 Mukaitadashi
1993 CK1, see 20043 Ellenmacarthur
1989 CK1, see 4836 Medon
1986 CK1, see 3951 Zichichi
1983 CK1, see 4198 Panthera
Other
Crusader Kings I, a grand strategy computer game by Paradox Interactive
the illicit drug cocktail, see cocaine and ketamine
the Calvin Klein product, see Calvin Klein (company)
Pentecost biogeographic region, see Interim Biogeographic Regionalisation for Australia
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https://en.wikipedia.org/wiki/Ektor%20Kaknavatos
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Ektor Kaknavatos () is the pen name of Greek poet and essayist Yorgοs Kontoyorgis (Γιώργος Κοντογιώργης; 1920 – 9 November 2010), who was born in Piraeus, Greece. Between 1937 and 1941 he studied mathematics in Athens. After World War II he worked as a teacher of mathematics and then as a civil servant in the Ministry of education.
He appeared for the first time with the collection Fuga in 1943. After 18 years of silence, in 1961, he circulated in a small circle of friends the collection Diaspora (Dissemination). A pure surrealist, he experiences poetically-revolutionary the paradox of his Greek fate.
Bibliography
Fuga (1943)
I klimaka tou lithou – Diaspora (1961)
Tetrapsifio me tin evdomi chordi (1972)
Diigisi (1974)
Odos Laistrygonon (1978)
Ta machairia tis Kirkis (1981)
Anastixi tou thrylou gia ta nefra tis politeias (1981)
In perpetuum (1983)
Kivotio tachytiton (1987)
Oiakismoi tou Menesthea Kastelanou tou Mystros (1995)
Chaotika I (1997)
Ypsikaminizouses neoplasies (2001)
Akarei (2001)
Sta proso Iachis (2005)
Vrachea ke Makra (2005)
Sfodra airetiko imerologio tou 2000 (in cooperation with Spyros Kaniouras) (1999)
To klarino i Safari sto verso tou pragmatikou (2005)
Collected works
Piimata 1943–1974
Piimata 1978–1987
References
Ektor Kaknavatos at Ekebi.gr
1920 births
2010 deaths
Modern Greek poets
Greek essayists
20th-century Greek poets
20th-century essayists
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https://en.wikipedia.org/wiki/Quasitopological%20space
|
In mathematics, a quasi-topology on a set X is a function that associates to every compact Hausdorff space C a collection of mappings from C to X satisfying certain natural conditions. A set with a quasi-topology is called a quasitopological space.
They were introduced by Spanier, who showed that there is a natural quasi-topology on the space of continuous maps from one space to another.
References
.
Topology
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https://en.wikipedia.org/wiki/Communication%20physics
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Communication physics is one of the applied branches of physics. It deals with various kinds of communication systems. These can range from basic ideas such as mobile phone communication to quantum communication via quantum entanglement. Communication physics is also a journal edition created in 2018 published by Nature Research that aims to publish research that involves a different way of thinking in the research field.
Applications
Communication physics aims to study and explain how a communication system works. This can be applied in a hard science way via Computer Communication or in the way of how people communicate.
An example of communication physics is how computers can transmit and receive data through networks. This would also deal with explaining how these devices encode and decode messages.
See also
Electronic communication
Optical communication
Computer communication
Telephone
Telegraph
Radio
Television
Mobile phone communication
Nanoscale network
References
Applied and interdisciplinary physics
Telecommunication theory
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https://en.wikipedia.org/wiki/Project%20Enlightenment
|
Project Enlightenment
is a historical interpretation society affiliated with McLean High School. The project was begun in 1992 by Physics teacher Dean Howarth, who estimated in 2008 that 400-500 members had passed through the group in 16 years, although this figure is unsubstantiated.
In 2011, it was expanded into a fully credited Living History class.
The group focuses on the late eighteenth-century enlightenment era. A wide range of subject areas are represented by members, including the natural sciences, music, literature, military affairs, art, and politics. It is unusual among similar reenacting groups in its extensive interpretation of civilian affairs, especially scientific.
Notable Events
The group performs annually at George Washington's Mount Vernon.
The group works closely with several notable historical sites in Alexandria, Virginia, and frequently makes appearances at Gadsby's Tavern Museum and the Stabler-Leadbeater Apothecary Shop.
Project Enlightenment has appeared at James Madison's Montpelier, along with notable James Madison reënactor John Douglass Hall.
References
External links
Project Enlightenment promotional video
History organizations based in the United States
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https://en.wikipedia.org/wiki/Riesz%20mean
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In mathematics, the Riesz mean is a certain mean of the terms in a series. They were introduced by Marcel Riesz in 1911 as an improvement over the Cesàro mean. The Riesz mean should not be confused with the Bochner–Riesz mean or the Strong–Riesz mean.
Definition
Given a series , the Riesz mean of the series is defined by
Sometimes, a generalized Riesz mean is defined as
Here, the are a sequence with and with as . Other than this, the are taken as arbitrary.
Riesz means are often used to explore the summability of sequences; typical summability theorems discuss the case of for some sequence . Typically, a sequence is summable when the limit exists, or the limit exists, although the precise summability theorems in question often impose additional conditions.
Special cases
Let for all . Then
Here, one must take ; is the Gamma function and is the Riemann zeta function. The power series
can be shown to be convergent for . Note that the integral is of the form of an inverse Mellin transform.
Another interesting case connected with number theory arises by taking where is the Von Mangoldt function. Then
Again, one must take c > 1. The sum over ρ is the sum over the zeroes of the Riemann zeta function, and
is convergent for λ > 1.
The integrals that occur here are similar to the Nörlund–Rice integral; very roughly, they can be connected to that integral via Perron's formula.
References
M. Riesz, Comptes Rendus, 12 June 1911
Means
Summability methods
Ze
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https://en.wikipedia.org/wiki/Umargam
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Umargam (IAST: Umargām), also known as Umbergaon (IAST: Umbargāv) is a census town and Municipality in the Indian state of Gujarat. The town is known for its beaches, its tourist attractions, and its film industry. In 2017, the town became home to India's first nanotechnology manufacturing plant.
Demographics
As of the 2011 Indian census, Umargam had a population of 21,648. 55% percent of the city was male, while 45% was female. Umargam has a literacy rate of 71%, which is higher than the national average. Several languages are spoken in Umargam, including Gujarati, Hindi, Bhojpuri and Marathi.
Tourism
In 2012, the Government of Gujarat announced that tourism-related infrastructure will be developed in Umargam, and other towns in the region of Gujarat.
Umargam Beach is popular tourist attraction in the town of Umargam. The location is famous for its 'Chowpatty style' street food, which includes items such as Bhelpuri, Panipuri, Sevpuri, and vada pav. Horse-pulled carriages offer rides to tourists, and the beach is a popular site in the city for the annual Ganesh Chaturthi celebration and other festival like Holi, beach is mostly crowded during evening time.
There is a small place named Sarai Fatak which is situated near to Sarigam. It is very natural place.
Climate
Umargam is located in hilly area with a uniform climate. During the summer the temperature reaches 35 °C. Monsoons prevail from mid June to September. Umargam is located at . The town receives average annual p
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https://en.wikipedia.org/wiki/AP1
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AP1 or AP-1 may refer to:
Biology
Activator protein 1, dimeric transcription factor
Adaptor protein 1, tetrameric clathrin-associated complex
Transportation
Autopista AP-1, a Spanish motorway
Caproni A.P.1, a 1934 Italian attack aircraft monoplane
USS Henderson (AP-1)
Other uses
Protocol I, or AP 1, a 1977 amendment to the Geneva Conventions
See also
API (disambiguation)
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https://en.wikipedia.org/wiki/Wolfgang%20Ziebart
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Wolfgang Ziebart (born 30 January 1950 in Hannover) is a German automotive and electronics industry executive.
Career
After receiving his Abitur, Wolfgang Ziebart studied mechanical engineering at the Technical University of Munich where he received his Diploma and PhD (Dr.-Ing.) in 1973 and 1976, respectively. Ziebart started his career in 1977 with the car manufacturer BMW. After a spell at Artega Automobile, a German electric sports car manufacturer, he joined Jaguar Land Rover as head of product development in 2013.
Personal life
Ziebart has been married to his wife Iris since 1975 and is father of three children. Both of Ziebart's brothers have doctoral degrees and one of them has earned the title of professor. His father Prof. Dr.‑Ing. Erwin Ziebart, also a former CEO of an automobile supplier, died on 19 August 2007.
References
BMW people
Jaguar Land Rover
1950 births
Living people
Technical University of Munich alumni
German automotive engineers
Engineers from Hanover
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https://en.wikipedia.org/wiki/APCS
|
APCS may refer to:
Serum amyloid P component, a human gene
AP Computer Science
Academics Plus Charter Schools, in Arkansas
Avoyelles Public Charter School, Mansura, Louisiana
See also
APC (disambiguation)
|
https://en.wikipedia.org/wiki/Martin%20Tajmar
|
Martin Tajmar is a physicist and professor for Space Systems at the Dresden University of Technology. He has research interests in advanced space propulsion systems, FEEP thrusters, breakthrough propulsion physics and possible connections between gravity and superconductivity.
Biography
Tajmar completed his PhD in numerical plasmaphysics at the Vienna University of Technology, Austria, in 1999, and is now an external lecturer for the university. He also published the textbook Advanced Space Propulsion Systems in 2003.
Gravitomagnetism research
In a 2003 paper, Tajmar proposed that a gravitational effect may explain the long-standing discrepancy between the mass of Cooper pairs first measured in superconductors by Janet Tate et al. and the theoretically-expected value.
In 2006 Tajmar and several coworkers announced their claim to have measured a gravitomagnetic version of the frame-dragging effect caused by a superconductor with an accelerating or decelerating spin. As of April 2008, the effect has not yet been observed independently.
In February 2008 Tajmar filed an international patent application for a "Process for the generation of a gravitational field and a gravitational field generator."
In June 2008, Tajmar reported a new phenomenon suggesting that signals could be induced in a gyroscope resulting from a new property of rotating low-temperature helium. He also reported that because the rings in the experiment were accelerated pneumatically, and not with high a
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https://en.wikipedia.org/wiki/Jean-Claude%20Flabel
|
Jean-Claude Flabel is the author of the aerospace engineering textbook Practical Stress Analysis for Design Engineers; a handbook on practical stress analysis which is widely used within the aerospace industry.
Jean-Claude Flabel graduated from the California State University, Northridge in 1970 with a bachelor's degree in mechanical engineering. He has worked with a number of prominent aerospace companies including Rockwell International, Gulfstream American, Sikorsky Aircraft, American Jet Industries and Bell Aerospace and has specialized in stress analysis and safety-of-flight certification of primary airframe structures and components.
Since its publication, the textbook Practical Stress Analysis for Design Engineers has been adapted into a distance learning certificate course for practicing stress engineers. The emphasis of the course is on technical fundamentals and practical real-life examples of stress analysis, with less treatment given to the higher mathematical or derivative aspects of the subject.
External links
Practical Stress Analysis for Design Engineers - Jean-Claude Flabel's website
Book review on Amazon
Living people
California State University, Northridge alumni
Year of birth missing (living people)
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https://en.wikipedia.org/wiki/Stafford%20Lightman
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Stafford Louis Lightman (born 7 September 1948) has been Professor of Medicine, University of Bristol, since 1993. He was president of the British Neuroscience Association 2017–2019.
Education
Lightman was educated at Repton School and Gonville and Caius College, Cambridge (MA, MB BChir, PhD). He did his clinical training at Middlesex Hospital Medical School
Career and research
Lightman started his research career working on catecholamine uptake mechanisms in Cambridge where, after completed his clinical studies at the Middlesex Hospital in London, he studied the role of opioid peptides and brain stem catecholamine pathways in the regulation of neurohypophysial hormone secretion. He laterinvestigated the dynamics underlying stress hormone secretion.
Visiting Senior Scientist, Medical Research Council Neuro-Pharmacy Unit, Cambridge, 1980–81
Wellcome Trust Senior Lecturer, St. Mary's Hospital Medical School and Honorary Consultant Physician and Endocrinologist, St Mary's Hospital, 1981–82
Charing Cross and Westminster Medical School:
Reader in Medicine, 1982–88
Professor of Clinical Neuroendocrinology, Consultant Physician and Endocrinologist, 1988–92
Honorary Senior Research Fellow, Institute of Neurology and Consultant Endocrinologist to the National Hospital for Neurology and Neurosurgery, 1988-
Chairman, Pituitary Foundation, 1995-
Founding Fellow of the Academy of Medical Sciences, 1998
Editor-in-chief, Journal of Neuroendocrinology, 1989–96.
Mortyn Jones L
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https://en.wikipedia.org/wiki/Denis%20Noble
|
Denis Noble (born 16 November 1936) is a British physiologist and biologist who held the Burdon Sanderson Chair of Cardiovascular Physiology at the University of Oxford from 1984 to 2004 and was appointed Professor Emeritus and co-Director of Computational Physiology. He is one of the pioneers of systems biology and developed the first viable mathematical model of the working heart in 1960.
Education
Noble was educated at Emanuel School and University College London (UCL). In 1958 he began his investigations into the mechanisms of heartbeat. This led to two seminal papers in Nature in 1960 giving the first experimentally-based mathematical simulation of the electrical rhythm of the heart, extensively developed with Richard Tsien in 1975, and with Dario DiFrancesco in 1985. All three articles form the foundations of modern electrophysiology of the heart. The 1985 article was included in 2015 in the Royal Society's 350 year celebration of the publication of Philosophical Transactions.
From this work it became clear that there was not a single oscillator which controlled heartbeat, but rather this was an emergent property of the feedback loops involving the various ion channels. In 1961 he obtained his PhD working under the supervision of Otto Hutter at UCL.
Research
Noble's research focuses on using computer models of biological organs and organ systems to interpret function from the molecular level to the whole organism. Together with international collaborators, his team
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https://en.wikipedia.org/wiki/Holonomic%20function
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In mathematics, and more specifically in analysis, a holonomic function is a smooth function of several variables that is a solution of a system of linear homogeneous differential equations with polynomial coefficients and satisfies a suitable dimension condition in terms of D-modules theory. More precisely, a holonomic function is an element of a holonomic module of smooth functions. Holonomic functions can also be described as differentiably finite functions, also known as D-finite functions. When a power series in the variables is the Taylor expansion of a holonomic function, the sequence of its coefficients, in one or several indices, is also called holonomic. Holonomic sequences are also called P-recursive sequences: they are defined recursively by multivariate recurrences satisfied by the whole sequence and by suitable specializations of it. The situation simplifies in the univariate case: any univariate sequence that satisfies a linear homogeneous recurrence relation with polynomial coefficients, or equivalently a linear homogeneous difference equation with polynomial coefficients, is holonomic.
Holonomic functions and sequences in one variable
Definitions
Let be a field of characteristic 0 (for example, or ).
A function is called D-finite (or holonomic) if there exist polynomials such that
holds for all x. This can also be written as where
and is the differential operator that maps to . is called an annihilating operator of f (the annihilating opera
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https://en.wikipedia.org/wiki/Acyclic%20object
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In mathematics, in the field of homological algebra, given an abelian category
having enough injectives and an additive (covariant) functor
,
an acyclic object with respect to , or simply an -acyclic object, is an object in such that
for all ,
where are the right derived functors of
.
References
Homological algebra
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